Requires Android: 2.3 and up
Counter-Strike Portable is the best port of this game for Android.
It’s the mobile version of Counter Strike 1.6 powered by Unity 3D. More than 600 players online! Also you can play web version using your browser. Made by russian 4pda community.
Unity Home: http://www.facebook.com/CounterStrikePort
Thanks to XDA developer TiP@H, a mobile version of the game (called Counter-Strike Portable – no technical or official relation to the original Valve title) has been ported to Android in a pre-release test form. Online multiplayer is fully present (though it appears limited to some weird Matrix map with Zombie mode?), and there’s a single-player version with ‘bot’ enemies and allies that you can download as well.