What kind of changes and improvements have been made, got no information about that. Basically Drago9oiD claims he resized the splash screen for ldpi screens (our Galaxy Y's), etc, and msnnsm doesn't give any information on what has been changed aswell, for now it remains a mystery.
Download the game - Click here. | Mediafire mirror
You can try it out without the need of CF3D or anything else. Tested on a pure stock ROM and kernel without any additional tweaks or performance improving software, it just runs smoothly.
You may try to use the Seeder app, overclocking, CF3D or performance governors in a custom kernel. Hopefully the performance will be even slightly better than it is now. Huge thanks to whoever optimized it this big, enjoy.