This collection also features more than thirty-five minutes of unlockable interviews from Sega of Japan, a "museum" with facts about the games, strategy tips and box art for each game, as well as a "Sega Cheat Sheet" that consists of cheat codes for most games, and a set of unlockable arcade games, (some of which are from the early Sega/Gremlin era).
Unlockable titles included in the PSP version
Astro Blaster
Congo Bongo (AKA Tip Top)
Eliminator
Space Fury
Super Zaxxon
8 (Physical: 4/Digital: 4) Games In The Sega Collection Series: