Bmtron
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Bmtron is a classic computer game. The main object of the game, which is similar to Snake, is to trap your opponents before they trap you. It is a 1-4 player game, but it is also possible to play against the computer. The player must avoid walls as well as other players' tails. There is an option for team play. Bmtron includes multiple colors for users' characters such as red, blue, green, grey, and others. If playing with four human players, it can become crowded around the keyboard.
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http://kryshen.pp.ru/games/bmtron.html