I like the atmosphere and idea behind this, and also the ZX spectrum style.... even though, you didn't obay to the rules of only two colors for each field... For example at those spikes.
But sadly...
- returning that page to the door results in....nothing!
- Goodies can appear inside of spikes
- The power drain of flying is a bit too high, making the movement not much fun, as you are too often stuck with waiting