Phantasy Star II is worth mentioning on its own. Sega just released the game on iOS today, and for my money (only $2.99 during this sale!), there's no better Genesis-era RPG. Seriously, if you are a fan of the console RPG genre at all, this one's a must buy. The story's fun, the gameplay is excellent, and having the title on the App Store is a real treat. Shining Force is a great game, and Streets of Rage is a fun title to have around for just a buck, but if you buy one game during this sale (which lasts through September 1st -- thanks, Sega!), I'd recommend Phantasy Star II.