diff --git a/README.md b/README.md
index ba617b12..79b1104d 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,5 @@
 # Serious Sam Android
 
-This project wants to make Serious Sam running natively on Android.
-
-## Video demostration:
-*coming soon...*
-
 ## Running the game
 1. Locate the game directory for "Serious Sam Classic The Second Encounter" ([steam](https://store.steampowered.com/app/41060/Serious_Sam_Classic_The_Second_Encounter/))
 1. [Download](https://github.com/aarcangeli/Serious-Sam-Android/releases) and install SeriousSamRelease.apk
@@ -22,44 +17,41 @@ This project wants to make Serious Sam running natively on Android.
 1. Start the game
    * The first time will ask you permission to read from external storage
 
-Currently the game is playable only with an xbox 360 controller connected with usb
+Currently the game is playable only with a xbox 360 controller connected via usb
 
-NB: In some devices the OTG storage must be enabled by settings -> advanced -> OTG storage
+NB: In some devices the OTG storage must be enabled (settings -> advanced -> OTG storage)
 
 ### Compile from source
 If you want to compile the apk file from the source, proceed as follows:
 1. Clone or download the repository in a directory
-   * Do not use spaces in the path to the solution.
-1. Open the project with Android Studio
+1. Open the project in Android Studio
 1. Connect an android device with debugging enabled
 1. Compile and run the game
 
-If you have a precompiled version of ecc.exe you can put inside /Serious-Engine/Sources/Tools.Win32 and
+If you have a precompiled version of ecc.exe you can put it inside the directory /Serious-Engine/Sources/Tools.Win32 and
 resync the project (File -> Sync with Gradle Files)
 
 ## Porting notes:
 
-***Graphic***
-
-Of course Serious Sam has been designed to work on a desktop computer.
-OpenGL ES is a subset of OpenGL, and many features aren't available on android.
+### Graphic Engine
 
-To solve this problem has been implemented an [adapter] that allows you to run some GL calls on GLES.
+Serious Sam has been designed to work on a desktop computer in OpenGL or DirectX.<br>
+This project is based on OpenGL ES, a subset of OpenGL, and many features that are necessary to run
+Serious Sam are not avaiable on android.
 
-***Instruction set***
+The problem is solved by implementing an [adapter] that allows you to run OpenGL calls on OpenGL ES.
 
-With [X86 assembly] you can optimize dramatically the performances for many speed-critical sections of code.
-However there is a tiny problem: it is not portable.
+### Instruction set
 
+[X86 assembly] is quite offen used in Serious Engine.
 Since the main hardware platform for Android is [ARM],
 in some cases it was necessary to convert asm codes into compatible equivalents.
 
-Luckly CroTeam has provided (in most cases) a constant that enable to switch from asm to an equivalent
-standard C code.
+CroTeam has provided (in most cases) a constant that enable to switch from asm to an equivalent C code.
 
-An other problem was with some undefined behaviors of the [specs](http://c0x.coding-guidelines.com/6.3.1.4.html)
+There was another problem with some undefineds behaviors from the [specs](http://c0x.coding-guidelines.com/6.3.1.4.html)
 
-For example, take a look at this code:
+For example:
 
 ```C
 float source = 1e20f; // a logically large number for a 16-bit signed integer
@@ -67,18 +59,17 @@ int32_t destination = (int32_t) source;
 printf("destination: %i", destination);
 ```
 
-Trying to run this snippet on windows or on Android I got two different results.
+Running this snippet on Windows or Android we got two different results:
 
-- windows: destination: -2147483648
-- android: destination: 2147483647
+- Windows: destination: -2147483648
+- Android: destination: 2147483647
 
-Has been hard to discover [this](https://github.com/aarcangeli/Serious-Sam-Android/commit/5eb280352b51c2b7c6c5373fff7871f890ff139b)
-bug in serious engine.
+This difference caused some troubles.
 
-***The compiler***
+### Compiler
 
-Serious engine must be compiled with MSVC, android ndk must be compiled with Clang.
-Unfortunately, these two programs have differences.
+Serious Engine must be compiled with MSVC while Android ndk with Clang.
+These two programs have differences.
 
 These are just a few examples:
 - ISO C++ forbids forward references to 'enum' types