You can’t currently make a platformer game in Gimkit Creative but Josh said he will be releasing it soon.
@Apoll02 was able to make a platformer game using 2D rendering, you should check it on the wix, it’s really cool.
Welcome to the forums! @GimkitLover123!
Don’t forget to check out the new-user-must-read and forum-tips tag.
The Community Made Guides category is also very useful, posts there give you a gist of the rules and mechanics in Gimkit Creative.
While you’re at it, I suggest also reading the
If you need help with anything, just ask!
After all, this is a Community Forum 
!
Don’t forget to mark a solution if it helped, @GimkitLover123!