Gametap is a one-stop-shop for emulator junkies, casual gamers and, perhaps most importantly, budget-conscious (aka. cheapskate) players who don’t have $50-60 to drop on a game that may or may not turn out to be a buggy mess.
As of this writing, Gametap has almost 1,000 games in its remarkably intuitive game library. The bulk is made up of great classics (Street Fighter II, Missile Command etc.) and not-so-great ones (Intellivision Skiing, Break Dance) for most major formats stretching back to the Atari 2600 days of yore.