Super Bomberman
"Crawl" was developed by Powerhoof, a two-person indie studio based in Melbourne. They described the game as their version of four-player "Gauntlet" combined with the Japanese bullet hell genre, or a combination of "Super Bomberman" and "The Legend of Zelda". The game was made on the Unity game engine, and the developers designed a pixelated version of Gabe Newell as an in-game boss.