Sega is bringing some of its best retro games to your smartphone. Today the company announced a new service called Sega Forever, which is essentially a lineup of classic games from the company that will be available on both iOS and Android. Each game will be available for free — you can pay $1.99 to turn off ads — and will include modern features like cloud saves, Bluetooth controller support, and online leaderboards. (Sega notes, however, that you can still play each game offline.)

At launch, five Sega Genesis games will be available, including the original Sonic the Hedgehog (which was already previously available on mobile), Comix Zone, Altered Beast, Kid Chameleon, and Phantasy Star II. “As the Sega Forever collection expands through months and years,” the company explains, “it will include both official emulations and ported games that pan all Sega console eras, each adapted specifically for mobile devices while remaining faithful to the original games.”

The developer says that following the launch of the first five games, additional titles will be added to the collection every two weeks. The debut Sega Forever games will launch tomorrow globally on both iOS and Android.