The game is cool, Sonic moves the way he should move. There is a problem with blurring and a couple of moments in the jumps but they are not very critical, did not understand the joke with fullscreen but I have already read the posts to it that the development is underway. I hope the project will be brought to release and will be interesting to run around the locations, music by the way cool want to re-listen. And also please add a sound adjustment, I wish you good luck in the development!
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With fullscreen I added because in the settings it did not work well with the level, the adjustment with sound is in development, all okay for now the game is in the state of demo version, I plan 2 more levels and I think on this I will finish the project. It will be without a story, just a run forward and that's it, but thanks for the comment. Nice :0