
The moon is made of cheese, and The Adventures of Square is at least 80% terrible puns by weight. Built on the open-source GZDoom engine by BigBrik, a team of the best and brightest in the Doom modding scene, this free FPS borrows inspiration from old-school shooters far and wide but also feels like the missing link between the childish whimsy of Commander Keen and the unrelenting violence of the Doom series.
Source : rockpapershotgun.com