The puzzle board is full of pentagons. In Pentanium, match them with their neighbors until they are all removed and gone, a proper logic game for all ages. Simple Mouse clicks are enough to force them to crash onto another pentagon really next to it, unless their color demands otherwise, either locking them or making them too special to combine with any type. Other than that, the strategic thinking won't demand much effort at the beginning. Restart if needed, until getting the right order of movements so that not a single block of Pentanium is left behind, proceeding to the next level.