What’s the oldest slot you still play?

Honestly I still find myself spinning Book of Ra every now and then. It just hits some nostalgia for me, plus it’s got a pretty simple bonus round that doesn’t try to do too much. I know the graphics look ancient next to most new stuff but something about it just works, especially if I want something mindless during a slow sports day. I keep telling myself not to go full-on session, just a handful of spins to scratch the itch.

Part of me wonders if the old ones actually keep people more disciplined. I get that the newer slots have all these features and side bets, but I see myself chasing less when the game is basic. Anyone else still have an old standby slot you circle back to?