As you know about the save issue, I should say it was fine when I closed the game and started a New Game afterwards. After that I tried a couple more runs, but it crashed once when I exited a dungeon, and then again when I died. So unfortunately I wasn't able to play much of it.
Form what I played, the flight minigame connecting the dungeons is cool. There's a little bit of a learning curve with the drift. especially since the parallax and lack of level assets makes it hard to be aware of how fast you're going before you're crashing right into trouble.
The movement is nice and snappy. There was one bit where it was hard to tell if I was turning or not due to the layout and the single tile asset.
Playthroughs: (May be some slight audio desync in the video.)