A nice little platformer, the controls are responsive and the graphics all follow a consistent theme. Here are some thoughts I had about it:
- The jump height is a little too high, I would often jump above the camera out of view
- You can jump while already in the air, meaning you can clear the level by spamming the space bar
- Coins/score doesn't reset after dying
- The platforms could stand out from the background wall a bit more, it was a little difficult at times to tell where I should land
Overall this is a solid start to a platformer that could be a lot of fun with some obstacles and a few tweaks here and there. Nice one!