Activision is revisiting its roots with the release of Activision Anthology, an iOS collection of video games originally made for the Atari 2600. It’s a free download (unlockable using In-App Purchase).

Today’s gamers know Activision as one of the modern era’s most popular video game publishers: the Call of Duty series, Guitar Hero, and many others have come from Activision. But 30 years ago, Activision was the first third-party publisher of video games for consoles, making titles for the legendary Atari 2600.

Forty-five of those cartridge games made for the Atari 2600 are available in Activision Anthology, unlockable using in-app purchases either in “game packs” or complete for $6.99.

You can play the original Pitfall, for example (recently resurrected as a rather disappointing run-and-jump game in the vein of ‘Temple Run’); River Raid, Barnstorming, Demon Attack and many others.

Admittedly, this may only appeal to a segment of retro-gaming enthusiasts who remember the Atari 2600 with fondness, but for those of us who cut our first teeth in home console gaming on systems like this, it’s a lot of fun.