With Sonic Mania drumming up feelings of nostalgia, it's high time to revisit some oldie Sonic the Hedgehog songs. Here's a Top 10 from the 2D 90's games.

The upcoming retro throwback, Sonic Mania, will include bonus stages in the style of 1993's Sonic CD, SEGA announced at San Diego Comic-Con this weekend.

By comparison, Sonic 2 looks like an 8-bit game, as Sonic CD sees you spending way more time in each screenful of in-game scenery, as opposed to just dashing over the top of it.

The Windows Phone version of Sonic CD features a ton of improvements over the classic game, including true widescreen visuals, two selectable soundtracks, and the newly-playable sidekick Tails.