A mobile tennis game, and a pretty basic one. You have to beat Tails, Amy and then Knuckles in a best-of-3 tennis match.

Get into position and hold the swing button to charge up your shot. Each opponent gets more difficult as you get through the game – Tails will get outs most of the time, while Knuckles is quite tough, especially for the game’s clunky controls.

The game got a graphical update in 2004, which is the version I played, but the game itself is identical.