Extras
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).
The PS2's unlockable arcade titles are:
- Altered Beast (Arcade version) - Released in 1988
- Future Spy - Released in 1984
- Tac/Scan - Released in 1982
- Zaxxon - Released in 1982
- Zektor - Released in 1982
The PSP's unlockable arcade titles are:
- Astro Blaster - Released in 1981
- Congo Bongo (AKA Tip Top) - Released in 1983
- Eliminator - Released in 1981
- Space Fury - Released in 1981
- Super Zaxxon - Released in 1982
Read more about this topic: Sega Genesis Collection