This game gives you a single tool and still makes every single level feel unique. The fact that almost everything in every level is destructable gives the player a lot of options. When solving level 10, I didn't understand that the enemy has to walk on the button. So I destroyed a gem, released the enemy and shot it mid-air. This way, I was able to reach the top of the level. Finding my own, un-intended solution was very fun.
Made it to Level 30 :)
