itch.io

I haven’t tested online but I develop on Mac, so I can vouch for this. If you’re a talented or knowledgeable enough developer you can port it to other platforms but can be a headache if you don’t know what you’re doing thoroughly.

this is so neat, I’d like a up down left right version

I just donated $15 to this project. Between 1-4, slopes and the water I’ve been trying to figure this out for a year. 

at this point I could probably add stuff like ladders and wall jumps, myself, but ideas to add for version 5

part A seems more intuitive, I’m not sure the difference in this. Regardless, amazing work