Berusky is a free logic game, published under GNU Public License and it's based on an ancient puzzle named Sokoban.
An old idea of moving boxes in a maze has been expanded with new logic items such as explosives, stones, special gates and so on. In addition, up to five bugs can cooperate and be controlled by the player.
In order to leave each level (there's about 120 levels in the game) it is necessary to own five keys and also to have a free way to the exit.
Berusky was primarily aimed to MS-DOS 5.x but the new version was reworked and runs on Linux and Windows now. It uses SDL library for graphics backend.
The game has been quite successful and well adopted by Czech players. We noticed about 20.000 downloads and Berusky was published as a CD bundle in many Czech gamer magazines, for instance Level, Gamestar.
Players highly appreciate its playability, well designed levels, low hardware requiements and nice graphics.