(Via Nokia Conversations.)
This is not a game for S60 device, but on your PC (Web browser). Why am I posting it here? This is actually a promotional game (and video) created for Nokia N-Gage platform.
When you click the URL, you will see an introductory video showing the largest Snakes game simulated with around 1000 people. The video itself is pretty amazing (see below). After the video, you will be presented with the Human Breakout game.