The objective is to beat the other entity, either by destroying it (Tetlix hits Acarlex with a block, Acarlex hits Tetlix with a ball) or claiming all the special glowing blocks. It's a hard game to get into - the interface and controls are very confusing, and the manual is even more confusing, due to being written in Russian and poorly translated into English. However, the game itself is ingenious and incredibly original. Definitely a must-have for Tetris and Blockout fans alike. KD-Lab released the game as freeware in 1999, so you really have no excuse not to try this one out if you're a puzzle fan. Two thumbs up, way up!