I think you are not following the theme of this game jam here. This game requires mouse click + space button/key. I am not sure if this is allowed or not because the description of game jam clearly says that the game should be playable with only one button.

But anyways, here is my review for this game.

I am guessing that you have used assets made by yourself and I always appreciate own assets. The game play was a little buggy. Sometimes the grappling thing launched my away from the object that I was grabbing. But I loved the idea of controlling directions using the grappling hook. That being said, it would be much better if the length of  the hook remains constant and the rocket just keeps on orbiting.  Also, can you add some HUD to indicate the number of gas tanks left.

One last thing, please add some in game text, because many people don't go to your game page and as a result they might not understand what they are supposed to do 😁.