TL; DR - great puzzle platformer; cute but exciting story; challenging gameplay; second run partly extremely hard but still fun! Br>An almost perfect port of a mobile game to the PC. The soundtrack runs pleasantly in the background and the reworked look simply fits. The difficulty curve is pleasant and 90% of the successes feel deserved. The void-mode (second round with an increased degree of difficulty) often drives you crazy, but always remains fair and should also be fun for casual gamers. The Linux version in itself works fine, but on a 64-bit system success are not recognized. This can be easily avoided by starting the 32-bit version of Steam. (Just > >linux32 steam< < enter, all small, no arrows, duh) Caution - If you started a game in 64-bit steam and Nihilibrum starts later in 32-bit steam, the score will not be taken over. I can highly recommend this game, especially if you like very good puzzle platforms.