I really love the concept of the game as I love grappling hooks in video games. The game is very fun when you are moving fast and have a lot of space to manoeuvre. The issue with the game is that the controls feel very floaty and a bit unresponsive. The way you build up momentum is a bit strange as I only really got speed from going side to side. Also, there were many times when I was clearly close enough to grapple onto something but I didn't. This problem could be fixed by adding some sort of indication that you can or can't grapple onto a block or maybe making sure that things that you should be able to grapple on you can actually grapple on. Another small problem is that the environments are a bit plain and lacking detail but I assume this will change the more the game is developed. With some refinements I can see this being an indie hit.