The idea is cool and original, great game!
I have only 3 suggestions:
1. The platformer controls feel a bit off and I think I found out why - there is no (or almost none) air friction. That means that if you jump and release the left or right key you continue in a perfect parabola. Check a different full fledged platformer and experiment with that - and you will quickly see that is not the case. Because of this it is much harder to land jumps. You jump and let off the right or left key, expecting to fall down, but instead you continue to move and miss the platform.
2. Small thing: why not add other controls and allow people to jump with 'w' or up arrow? It might feel more natural to people.
3. I think you should explain things a bit more at the start. And mainly I think you should not use old style English. In the end it doesn't matter that much but I know I don't like it and I think many people also feel that way.