Williams Arcade's Greatest Hits for the Sega Saturn is a compilation of six classic arcade games: Bubbles, Defender, Defender II, Joust, Robotron 2084 and Sinistar. In Bubbles you use a scrubbing bubble to chase the dirty scum into the drain. Both Defender and Defender II are shooters where you attempt to keep alien craft from abducting humans. Joust mounts you on an ostrich that you use to attack other men mounted on ostriches by bouncing on their heads. Robotron 2084 is a shooter where you battle robots who are attempting to destroy the last human family. Sinistar, one of the first games to successfully use digitized speech, places you in a fighter ship where your objective is to fly through quadrants destroying planetoids.