diff --git a/.gitignore b/.gitignore
index 9e5e4a8..9daf8c3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,5 @@ __pycache__/
 /db.sqlite3
 media/
 *.egg-info/
+.env
+.DS_Store
diff --git a/README.md b/README.md
index 5c381e1..3138f72 100644
--- a/README.md
+++ b/README.md
@@ -10,9 +10,9 @@ This project is a software that I'am developing during [this series of YouTube s
 1. Clone.
 1. `poetry install`.
 1. `poetry run python manage.py migrate`.
-1. `poetry run python manage.py createsuperuser --name=admin` and set password to `admin` (TODO: make the password optional).
+1. `poetry run python manage.py createsuperuser --username=admin` and set password to `admin` (TODO: make the password optional).
 1. `poetry run python manage.py runserver`.
 
 ### DB Example
 
-You can copy `example/db.sqlite3` file to the project's root and possibly run some migrations (`manage.py mugrate`). Then you'll be able to play example game. It is pretty incomplete but it shows most of engine features.
+You can copy `example/db.sqlite3` file to the project's root and possibly run some migrations (`manage.py migrate`). Then you'll be able to play example game. It is pretty incomplete but it shows most of engine features.
diff --git a/djaif/middleware.py b/djaif/middleware.py
index e48499a..82382dd 100644
--- a/djaif/middleware.py
+++ b/djaif/middleware.py
@@ -1,4 +1,5 @@
 from django.contrib.auth import authenticate, login
+from djaif.settings import SUPERUSER, PASSWORD
 
 
 def auto_login(get_response):
@@ -6,7 +7,7 @@ def middleware(request):  # noqa: WPS430
 
         if not request.user.is_authenticated:
             user = authenticate(  # noqa: S106
-                username='admin', password='admin',
+                username=SUPERUSER, password=PASSWORD,
             )
             login(request, user)
 
diff --git a/djaif/settings.py b/djaif/settings.py
index 3e6621a..2133a59 100644
--- a/djaif/settings.py
+++ b/djaif/settings.py
@@ -1,16 +1,8 @@
-"""
-Django settings for djaif project.
-
-Generated by 'django-admin startproject' using Django 3.0.5.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/3.0/topics/settings/
+import os
+from dotenv import load_dotenv
 
-For the full list of settings and their values, see
-https://docs.djangoproject.com/en/3.0/ref/settings/
-"""
 
-import os
+load_dotenv()
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -19,11 +11,12 @@
 # Quick-start development settings - unsuitable for production
 # See https://docs.djangoproject.com/en/3.0/howto/deployment/checklist/
 
-# SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = 'wpw=^28n)_)+ho#&z$5u12z50ny$3f%+8ld#)q2^a+87e_$o1o'
+DJANGO_SETTINGS_MODULE = 'djaif.settings'
 
-# SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = True
+SECRET_KEY = os.getenv('SECRET_KEY')
+DEBUG = bool(os.getenv('DEBUG'))
+SUPERUSER = os.getenv('SUPERUSER', 'admin')
+PASSWORD = os.getenv('PASSWORD', 'admin')
 
 ALLOWED_HOSTS = []
 
diff --git a/example/db.sqlite3 b/example/db.sqlite3
index a91251a..82184e7 100644
Binary files a/example/db.sqlite3 and b/example/db.sqlite3 differ
diff --git a/poetry.lock b/poetry.lock
index b47d956..483ea34 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,6 +1,6 @@
 [[package]]
 name = "appdirs"
-version = "1.4.3"
+version = "1.4.4"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
 category = "dev"
 optional = false
@@ -8,14 +8,11 @@ python-versions = "*"
 
 [[package]]
 name = "asgiref"
-version = "3.3.4"
+version = "3.5.2"
 description = "ASGI specs, helper code, and adapters"
 category = "main"
 optional = false
-python-versions = ">=3.6"
-
-[package.dependencies]
-typing-extensions = {version = "*", markers = "python_version < \"3.8\""}
+python-versions = ">=3.7"
 
 [package.extras]
 tests = ["pytest", "pytest-asyncio", "mypy (>=0.800)"]
@@ -30,33 +27,48 @@ python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
 
 [[package]]
 name = "attrs"
-version = "19.3.0"
+version = "21.4.0"
 description = "Classes Without Boilerplate"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[package.extras]
+dev = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "furo", "sphinx", "sphinx-notfound-page", "pre-commit", "cloudpickle"]
+docs = ["furo", "sphinx", "zope.interface", "sphinx-notfound-page"]
+tests = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "zope.interface", "cloudpickle"]
+tests_no_zope = ["coverage[toml] (>=5.0.2)", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "mypy", "pytest-mypy-plugins", "cloudpickle"]
+
+[[package]]
+name = "backports.zoneinfo"
+version = "0.2.1"
+description = "Backport of the standard library zoneinfo module"
+category = "main"
+optional = false
+python-versions = ">=3.6"
 
 [package.extras]
-azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
-dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
-docs = ["sphinx", "zope.interface"]
-tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+tzdata = ["tzdata"]
 
 [[package]]
 name = "bandit"
-version = "1.6.2"
+version = "1.7.4"
 description = "Security oriented static analyser for python code."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.7"
 
 [package.dependencies]
 colorama = {version = ">=0.3.9", markers = "platform_system == \"Windows\""}
 GitPython = ">=1.0.1"
-PyYAML = ">=3.13"
-six = ">=1.10.0"
+PyYAML = ">=5.3.1"
 stevedore = ">=1.20.0"
 
+[package.extras]
+test = ["coverage (>=4.5.4)", "fixtures (>=3.0.0)", "flake8 (>=4.0.0)", "stestr (>=2.5.0)", "testscenarios (>=0.5.0)", "testtools (>=2.3.0)", "toml", "beautifulsoup4 (>=4.8.0)", "pylint (==1.9.4)"]
+toml = ["toml"]
+yaml = ["pyyaml"]
+
 [[package]]
 name = "black"
 version = "19.10b0"
@@ -79,15 +91,18 @@ d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
 
 [[package]]
 name = "click"
-version = "7.1.2"
+version = "8.1.3"
 description = "Composable command line interface toolkit"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.7"
+
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
 
 [[package]]
 name = "colorama"
-version = "0.4.3"
+version = "0.4.5"
 description = "Cross-platform colored terminal text."
 category = "dev"
 optional = false
@@ -95,24 +110,25 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "darglint"
-version = "1.2.0"
+version = "1.8.1"
 description = "A utility for ensuring Google-style docstrings stay up to date with the source code."
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6,<4.0"
 
 [[package]]
 name = "django"
-version = "3.2.4"
-description = "A high-level Python Web framework that encourages rapid development and clean, pragmatic design."
+version = "4.0.6"
+description = "A high-level Python web framework that encourages rapid development and clean, pragmatic design."
 category = "main"
 optional = false
-python-versions = ">=3.6"
+python-versions = ">=3.8"
 
 [package.dependencies]
-asgiref = ">=3.3.2,<4"
-pytz = "*"
+asgiref = ">=3.4.1,<4"
+"backports.zoneinfo" = {version = "*", markers = "python_version < \"3.9\""}
 sqlparse = ">=0.2.2"
+tzdata = {version = "*", markers = "sys_platform == \"win32\""}
 
 [package.extras]
 argon2 = ["argon2-cffi (>=19.1.0)"]
@@ -120,30 +136,22 @@ bcrypt = ["bcrypt"]
 
 [[package]]
 name = "django-extensions"
-version = "3.1.3"
+version = "3.2.0"
 description = "Extensions for Django"
 category = "main"
 optional = false
 python-versions = ">=3.6"
 
 [package.dependencies]
-Django = ">=2.2"
+Django = ">=3.2"
 
 [[package]]
 name = "docutils"
-version = "0.16"
+version = "0.19"
 description = "Docutils -- Python Documentation Utilities"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-
-[[package]]
-name = "entrypoints"
-version = "0.3"
-description = "Discover and load entry points from installed packages."
-category = "dev"
-optional = false
-python-versions = ">=2.7"
+python-versions = ">=3.7"
 
 [[package]]
 name = "eradicate"
@@ -155,17 +163,16 @@ python-versions = "*"
 
 [[package]]
 name = "flake8"
-version = "3.7.9"
-description = "the modular source code checker: pep8, pyflakes and co"
+version = "3.9.2"
+description = "the modular source code checker: pep8 pyflakes and co"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 
 [package.dependencies]
-entrypoints = ">=0.3.0,<0.4.0"
 mccabe = ">=0.6.0,<0.7.0"
-pycodestyle = ">=2.5.0,<2.6.0"
-pyflakes = ">=2.1.0,<2.2.0"
+pycodestyle = ">=2.7.0,<2.8.0"
+pyflakes = ">=2.3.0,<2.4.0"
 
 [[package]]
 name = "flake8-bandit"
@@ -183,7 +190,7 @@ pycodestyle = "*"
 
 [[package]]
 name = "flake8-broken-line"
-version = "0.2.0"
+version = "0.2.1"
 description = "Flake8 plugin to forbid backslashes for line breaks"
 category = "dev"
 optional = false
@@ -206,26 +213,25 @@ flake8 = ">=3.0.0"
 
 [[package]]
 name = "flake8-commas"
-version = "2.0.0"
+version = "2.1.0"
 description = "Flake8 lint for trailing commas."
 category = "dev"
 optional = false
 python-versions = "*"
 
 [package.dependencies]
-flake8 = ">=2,<4.0.0"
+flake8 = ">=2"
 
 [[package]]
 name = "flake8-comprehensions"
-version = "3.2.2"
+version = "3.10.0"
 description = "A flake8 plugin to help you write better list/set/dict comprehensions."
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
 
 [package.dependencies]
-flake8 = ">=3.0,<3.2.0 || >3.2.0,<4"
-importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+flake8 = ">=3.0,<3.2.0 || >3.2.0"
 
 [[package]]
 name = "flake8-debugger"
@@ -241,7 +247,7 @@ pycodestyle = "*"
 
 [[package]]
 name = "flake8-docstrings"
-version = "1.5.0"
+version = "1.6.0"
 description = "Extension for flake8 which uses pydocstyle to check docstrings"
 category = "dev"
 optional = false
@@ -266,19 +272,19 @@ flake8 = ">=3.5,<4.0"
 
 [[package]]
 name = "flake8-isort"
-version = "2.9.1"
+version = "3.0.1"
 description = "flake8 plugin that integrates isort ."
 category = "dev"
 optional = false
 python-versions = "*"
 
 [package.dependencies]
-flake8 = ">=3.2.1"
-isort = {version = ">=4.3.5", extras = ["pyproject"]}
-testfixtures = "*"
+flake8 = ">=3.2.1,<4"
+isort = {version = ">=4.3.5,<5", extras = ["pyproject"]}
+testfixtures = ">=6.8.0,<7"
 
 [package.extras]
-test = ["pytest"]
+test = ["pytest (>=4.0.2,<6)"]
 
 [[package]]
 name = "flake8-polyfill"
@@ -327,53 +333,38 @@ flake8 = "*"
 
 [[package]]
 name = "gitdb"
-version = "4.0.2"
+version = "4.0.9"
 description = "Git Object Database"
 category = "dev"
 optional = false
-python-versions = ">=3.4"
+python-versions = ">=3.6"
 
 [package.dependencies]
-smmap = ">=3.0.1,<4"
+smmap = ">=3.0.1,<6"
 
 [[package]]
 name = "gitpython"
-version = "3.1.0"
-description = "Python Git Library"
+version = "3.1.27"
+description = "GitPython is a python library used to interact with Git repositories"
 category = "dev"
 optional = false
-python-versions = ">=3.4"
+python-versions = ">=3.7"
 
 [package.dependencies]
 gitdb = ">=4.0.1,<5"
 
 [[package]]
 name = "graphviz"
-version = "0.14"
+version = "0.20"
 description = "Simple Python interface for Graphviz"
 category = "main"
 optional = false
-python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+python-versions = ">=3.7"
 
 [package.extras]
 dev = ["tox (>=3)", "flake8", "pep8-naming", "wheel", "twine"]
-docs = ["sphinx (>=1.7)", "sphinx-rtd-theme"]
-test = ["mock (>=3)", "pytest (>=3.4,!=3.10.0)", "pytest-mock (>=1.8)", "pytest-cov"]
-
-[[package]]
-name = "importlib-metadata"
-version = "1.6.0"
-description = "Read metadata from Python packages"
-category = "dev"
-optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
-
-[package.dependencies]
-zipp = ">=0.5"
-
-[package.extras]
-docs = ["sphinx", "rst.linker"]
-testing = ["packaging", "importlib-resources"]
+docs = ["sphinx (>=4)", "sphinx-autodoc-typehints", "sphinx-rtd-theme"]
+test = ["pytest (>=7)", "pytest-mock (>=3)", "mock (>=4)", "pytest-cov", "coverage"]
 
 [[package]]
 name = "isort"
@@ -417,7 +408,7 @@ python-versions = "*"
 
 [[package]]
 name = "parso"
-version = "0.7.0"
+version = "0.7.1"
 description = "A Python Parser"
 category = "dev"
 optional = false
@@ -428,19 +419,19 @@ testing = ["docopt", "pytest (>=3.0.7)"]
 
 [[package]]
 name = "pathspec"
-version = "0.8.0"
+version = "0.9.0"
 description = "Utility library for gitignore style pattern matching of file paths."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
 
 [[package]]
 name = "pbr"
-version = "5.4.4"
+version = "5.9.0"
 description = "Python Build Reasonableness"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=2.6"
 
 [[package]]
 name = "pep8-naming"
@@ -455,15 +446,19 @@ flake8-polyfill = ">=1.0.2,<2"
 
 [[package]]
 name = "pillow"
-version = "7.1.1"
+version = "9.2.0"
 description = "Python Imaging Library (Fork)"
 category = "main"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.7"
+
+[package.extras]
+docs = ["furo", "olefile", "sphinx (>=2.4)", "sphinx-copybutton", "sphinx-issues (>=3.0.1)", "sphinx-removed-in", "sphinxext-opengraph"]
+tests = ["check-manifest", "coverage", "defusedxml", "markdown2", "olefile", "packaging", "pyroma", "pytest", "pytest-cov", "pytest-timeout"]
 
 [[package]]
 name = "pycodestyle"
-version = "2.5.0"
+version = "2.7.0"
 description = "Python style guide checker"
 category = "dev"
 optional = false
@@ -471,18 +466,21 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pydocstyle"
-version = "5.0.2"
+version = "6.1.1"
 description = "Python docstring style checker"
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [package.dependencies]
 snowballstemmer = "*"
 
+[package.extras]
+toml = ["toml"]
+
 [[package]]
 name = "pyflakes"
-version = "2.1.1"
+version = "2.3.1"
 description = "passive checker of Python programs"
 category = "dev"
 optional = false
@@ -490,39 +488,42 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
 
 [[package]]
 name = "pygments"
-version = "2.6.1"
+version = "2.12.0"
 description = "Pygments is a syntax highlighting package written in Python."
 category = "dev"
 optional = false
-python-versions = ">=3.5"
+python-versions = ">=3.6"
 
 [[package]]
-name = "pytz"
-version = "2019.3"
-description = "World timezone definitions, modern and historical"
+name = "python-dotenv"
+version = "0.20.0"
+description = "Read key-value pairs from a .env file and set them as environment variables"
 category = "main"
 optional = false
-python-versions = "*"
+python-versions = ">=3.5"
+
+[package.extras]
+cli = ["click (>=5.0)"]
 
 [[package]]
 name = "pyyaml"
-version = "5.3.1"
+version = "6.0"
 description = "YAML parser and emitter for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "regex"
-version = "2020.4.4"
+version = "2022.7.9"
 description = "Alternative regular expression module, to replace re."
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "restructuredtext-lint"
-version = "1.3.0"
+version = "1.4.0"
 description = "reStructuredText linter"
 category = "dev"
 optional = false
@@ -531,53 +532,44 @@ python-versions = "*"
 [package.dependencies]
 docutils = ">=0.11,<1.0"
 
-[[package]]
-name = "six"
-version = "1.14.0"
-description = "Python 2 and 3 compatibility utilities"
-category = "dev"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
-
 [[package]]
 name = "smmap"
-version = "3.0.1"
+version = "5.0.0"
 description = "A pure Python implementation of a sliding window memory map manager"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "snowballstemmer"
-version = "2.0.0"
-description = "This package provides 26 stemmers for 25 languages generated from Snowball algorithms."
+version = "2.2.0"
+description = "This package provides 29 stemmers for 28 languages generated from Snowball algorithms."
 category = "dev"
 optional = false
 python-versions = "*"
 
 [[package]]
 name = "sqlparse"
-version = "0.3.1"
-description = "Non-validating SQL parser"
+version = "0.4.2"
+description = "A non-validating SQL parser."
 category = "main"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+python-versions = ">=3.5"
 
 [[package]]
 name = "stevedore"
-version = "1.32.0"
+version = "4.0.0"
 description = "Manage dynamic plugins for Python applications"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.8"
 
 [package.dependencies]
 pbr = ">=2.0.0,<2.1.0 || >2.1.0"
-six = ">=1.10.0"
 
 [[package]]
 name = "testfixtures"
-version = "6.14.0"
+version = "6.18.5"
 description = "A collection of helpers and mock objects for unit tests and doc tests."
 category = "dev"
 optional = false
@@ -590,31 +582,39 @@ test = ["pytest (>=3.6)", "pytest-cov", "pytest-django", "zope.component", "sybi
 
 [[package]]
 name = "toml"
-version = "0.10.0"
+version = "0.10.2"
 description = "Python Library for Tom's Obvious, Minimal Language"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "typed-ast"
-version = "1.4.1"
+version = "1.5.4"
 description = "a fork of Python 2 and 3 ast modules with type comment support"
 category = "dev"
 optional = false
-python-versions = "*"
+python-versions = ">=3.6"
 
 [[package]]
 name = "typing-extensions"
-version = "3.7.4.2"
+version = "3.10.0.2"
 description = "Backported and Experimental Type Hints for Python 3.5+"
-category = "main"
+category = "dev"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "tzdata"
+version = "2022.1"
+description = "Provider of IANA time zone data"
+category = "main"
+optional = false
+python-versions = ">=2"
+
 [[package]]
 name = "wemake-python-styleguide"
-version = "0.14.0"
+version = "0.14.1"
 description = "The strictest and most opinionated python linter ever"
 category = "dev"
 optional = false
@@ -633,125 +633,108 @@ flake8-comprehensions = ">=3.1.0,<4.0.0"
 flake8-debugger = ">=3.1,<4.0"
 flake8-docstrings = ">=1.3.1,<2.0.0"
 flake8-eradicate = ">=0.3,<0.4"
-flake8-isort = ">=2.9.0,<3.0.0"
+flake8-isort = ">=3.0.1,<4"
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diff --git a/pyproject.toml b/pyproject.toml
index 9a459c8..a3a0ff0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,11 +5,12 @@ description = ""
 authors = ["Your Name <you@example.com>"]
 
 [tool.poetry.dependencies]
-python = "^3.6"
-django = "^3.0.5"
-Pillow = "^7.1.1"
-graphviz = "^0.14"
-django-extensions = "^3.1.3"
+python = "^3.8"
+django = "^4.0.6"
+Pillow = "^9.2.0"
+graphviz = "^0.20"
+django-extensions = "^3.2.0"
+python-dotenv = "^0.20.0"
 
 [tool.poetry.dev-dependencies]
 wemake-python-styleguide = "^0.14.0"