The incredibly generous Atari's Greatest Hits for iOS was released yesterday to the iTunes store. You can have 100 Atari classics for $14.99 or you can purchase various game packs such as the Asteroids pack, Warlords pack, or one of the many others for as little at $1.29.
Many of the included games work with Bluetooth multiplayer. For example, Canyon Bomber, Air Sea Battle, Space Duel, Tempest, Street Racer, Flag capture, all of the real Sports titles and many more allow you to play with a friend in the same room. The 2600 cart version is also available for most of the arcade games. Also, some of the included games were never released on an original physical cart (Tempest 2600 with Bluetooth multiplayer anyone?)
18 of the titles are original arcade games and 82 are 2600 classics (and some not so). Pong is included free when you download the free demo app in the store.
(8bitjeff is Jeff D. Fulton)