Citroën C4 Robot

I've only recently discovered this game, but speedrunning it is very addictive. Despite being just a few minutes long, CC4R is very challenging. As you get better at the game, more challenges open up like trying to collect more nitros. The car and robot are very balanced, it's not easily apparent which is better to use for most corners, encouraging the player to think if they want a strong time.

If you're just looking to play casually, I would still recommend you check out this game for the novelty factor alone. It just may lack a replayability factor for you.