Ooh thats a great question! I had patched the Wii U version to add multiplayer and a randomized level mode, so I added those to the PC/Mac version along with a slew of other smaller tweaks and changes…
- Added control stick support for movement
- Added introduction/control screen
- Added visual effects (screenshake, added animation, “improved” enemy art and backgrounds, outlines)
- Adjusted enemy behaviours and parameters
- Completely reworked one of the secret characters
- Adjusted platforming physics and hitboxes
Overall, I am hoping it added up to a smoother and more playable package!