I totally agree! I've been playing Tetris since I was a kid, and it's amazing how it still holds up. It’s perfect for quick brain training. Talking about simple but addictive games, have you ever tried something with a driving theme? It might sound completely different, but I find the same kind of satisfying focus in something like [Drift Hunters](https://drifthunters3d.io). The physics are simple, but nailing the drifts is surprisingly engaging!