Beta Station (2014)

"Beta Station is a casual sci-fi exploration dungeon crawl shoot-em-up. Two to five players take turns constructing a derelict space station and then exploring to find the treasures therein while fighting off monsters and the other players. It features a novel map construction mechanic that introduces an element of strategy to exploration usually lost in the “flip-a-tile” mechanic used by most dungeon crawl games. Beta Station is now and always will be available as a freely downloadable print & play game. "