It may sound unfathomable now, but Sonic CD was once a difficult game to obtain and play, until it was made available on iPhone and iPad as a remaster, back in 2011.
For those unaware, you controlled Sonic the Hedgehog through seven levels, set on a ‘Miracle Planet’. Each of these also had extra levels set in the past and the future. By destroying a hologram of one of the game’s antagonists, called Metal Sonic, and destroying a time ship containing that level’s 'badnik' enemies, you could unlock a ‘Good Future’ for that stage.
