The free-to-play games.
You don't know how to play the classic Sega arcade game Sonic the Hedgehog? Er, ok... run quickly, jump on things, collect rings, run even more quickly, avoid dying (except you can't die in this version, so that's a big help). Ok? This is more like a demo game, as it has only one level and there are a few minor "bugs" in it (I didn't write it by the way), but it is still fun if you're a true Sonic the Hedgehog fan like me. For example, it is possible to run off the edges of Sonic's world, but I