How it works ? 

It is quite simple, if you stop jumping you die, then at all times you will have to be jumping to continue living

At first you appear as in any world and you can look around without having to jump

But after moving the game starts you will have to jump

How can I craft something?

That is a good question, but for some strange reason when you are in the water by not touching the ground you can craft without fear of dying.

Just do not abuse this mechanism because it can be expensive to touch a block in the water, it will also count as not jumping

Why do you create this add-on?

I think I just wanted to try some things, it is something simple but it helped me to learn

Anything else ?

I think that after all it is not a fairly simple add-on, the only thing I will ask for is that if you manage to pass the game keeping the jump take a photo and tag me on twitter, just to know who made it

For the rest, it is all enjoy this super stressful add-on