I was able to beat all the levels and get all gems along the way. It wasn’t clear at first if the gems were needed or just a bonus challenge, since you would win the level regardless if you landed on the end pad. Some cool features would be the game storing your completed levels and collected gems so you can see it on the level select screen, or maybe a “perfect” score for you to aim for.
Kudos for providing a linux build :) 🐧