It’s come out on mobile phones now. A surprisingly faithful conversion. Controls aren’t as good as on a proper gaming device, obviously, but they’re far better than I expected them to be. (Using the K750i thumbstick.) It’s nice and fast, too, and seems to have the same level layouts as the Megadrive original, as far as I can remember.

Well, so far. I’ve not got past Green Hill Zone Act 2 yet. As I said, the controls are much better than expected, but aren’t perfect. Having to stop pressing right to press jump is a bit odd.