Here is a ROM hack for Super Mario Kart which changes all the tracks in the game.
1.3.1 - The "Actually fun" update
-Ghost Valley 2 tweaked further, should actually be fun now
-Feathers made slightly more common. They still require 5th to 8th place however.
-Even Even Even more Pixel Art Road fixes.
-Started naming each update. Including previous ones. Why? Because reasons!
-Pacman for best Smash Bros character
1.3 - The "Less flying capacity than a dodo" update
-Item probabilites rebalanced. You can no longer get ghosts on single player and feathers are super rare now (1/36 chance only if you are in any position from 5th to 8th) but only on GP. Match Race and Battle item probabilities are still the same.
-8-bit Bowser's shortcut nerfed more.
-Even Even more Pixel Art Road fixes.
-A lot of the tracks have been changed in multiple ways, with Bowser's Castle 3 being completely new.
-Super Pro Kart Hype!
1.2.2 - The "This is seriously the only thing i fixed" update
-Even more Pixel Art Road fixes...
1.2.1 - The "AI is no longer Skynet" update
-Slightly more balanced item chances.
-Some AI oddities fixed
1.2 - The "Now it works" update
-Item probabilities completely overhauled, now all tracks have different sets. (In 1.1 and earlier all tracks used the same set)
-8-bit bowser's shortcut now not as broken as it was before.
1.1 - The "Now it should work" update
-Item probabilites modified
-Track objects (Pipes, Thwomps, etc.) now work.
-Tweaked most of the tracks, both race and battle (Added shortcuts, tile fixes, more/less coins, etc)
-Pixel Art Road fixes
1.0 - Initial Release
-Initial release, streamed at http://www.twitch.tv/joemarshall94/profile
Super Mario Kart (USA).sfc - NOINTRO
CRC32: CD80DB86
MD5: 7F25CE5A283D902694C52FB1152FA61A
SHA-1: 47E103D8398CF5B7CBB42B95DF3A3C270691163B
SHA-256: 2ADA8919688087BE60A6A48CACE8F877ADD60C45D2E5D09E2442FAA55BE62A49