One of the best games I have ever played. A space exploration metroidvania where you are gated by knowledge rather than acquired abilities. Technically there's nothing stopping you from completing the game in about twenty minutes from starting it up for the first time, if you knew how. Combine that with a brilliant narrative primed for satisfying meta-narrative interpretations about the relationship between game, designer, and player, and you have an absolute must-play for puzzle fans and game design nerds.