Ultra Car: Obsticon Onslaught is a single-player shoot-'em-up game in which players control a cartoonish vehicle to combat waves of enemies using simple shooting mechanics. In this game, the setting is a sci-fi universe where the protagonist, a character inspired by David Willis's webcomic characters, faces off against various obstinate alien creatures called Obsticons. It stands out with its minimalist design, humorous tone, and integration of cartoon art style, offering an accessible yet engaging gameplay experience that emphasizes fast reflexes and strategic shooting.