Per-Ola Eriksson has come across a game I've never heard of before, and one that has never been released commercially. That game is Johannes Lipp's 1991 Amiga puzzler ' Slez '; a game in which you look to play as a strange looking sphere that has to traverse a pixelated maze while shooting at things and avoiding crashing into the sides. According to Amiga Games that Weren't ,Slez was one of three games developed by Johannes Lipp including Denjoy and Pot, and would most likely have been seen on German disk magazines (where a game is accompanied by a mini magazine) if released.