eight ball deluxe LE is criminally underrated. It is the EXACT SAME GAME as EBD but with a different cabinet. So you are telling me that a consensus top 100 game and an all-time favorite is that cheap?? Come on!
Who dunnit is another underrated game. Super unique style and gameplay.
Most Sega and data east games are still undervalued.
EMs fit the bill as well.