BattleShip on GameBoy has saved my life on many a road trip.
User Rating: 8.5 | Battleship GB
I have very good memories of this game saving me from the boring drive down to Las Vegas my family took in 1993. It was just plain fun, the graphics weren't that great.... The sound was straight annoying...... But something about blowing up fleets is so much fun, the best part about the game was it's alternate mode where you piloted a submarine. That was alot of fun, and after hours of playing it in the car I'd finally have to stop because of motion sickness. Now, I'm the driver on most trips.... Which is cool cause driving is like a real life video game.... Hahahaha, I'm just kidding, serious. 
