Barracora. Great underrated game. Hitting the drops in order to light your ball locks for multi is key and a challenge.
Cosmic Gunfight.
Bally Star Trek and Harlem Globetrotters. Both great times with short ball times.
Gottlieb Spirit. Great rules. 2 out of the 3 saucer ball locks hots are difficult and keep you coming back for more. Sounds are so unique. Spectacular.
Quicksilver and Dragonfist. Just amazing and fast and brutal.