I'm making a game which used to be a pony fan game, but I gave it a redesign to avoid legal troubles. It still shares some aesthetic qualities though.
It's called Sulphur Nimbus: Hel's Elixir, and the main character is a hippogriff. The game shares traits with collect-a-thon platformers, as well as hack and slash games, but what makes it special is the momentum-based physics, which also apply to the flying mechanic. So it's a game where you have to put in some work to keep flying, but when you've mastered it you can go just about anywhere.
I released a demo a while ago, which you can try out. Here's the video where I announced it:
Here's a direct download link (50 MB): http://oddwarg.com/Permanent/sulphurnimbusdemo.zip
And here's a video where I'm doing a fast playthrough:
https://www.youtube.com/watch?v=_ViwX8EUm0A
I'd like to hear your feedback if you try the demo, and if you could help me spread the word about the project then that would be a big help.