After coming back to this game after around 3 or 4 years, I finally beat it. However, the journey was extremely long. Way back when, I would always get stuck between floors 11-20. Those are definitely the most difficult levels of the game, oddly enough. However, once you're past level 20, the level resets into a new theme which sticks until the end. I felt like it was a lot easier, even with the invisible blocks, since you could cheese most of the levels and jump right over them. The best part is the simplicity of the "tutorial." There isn't really a tutorial, but the game slowly tells you how to move pass obstacles, either through Tasslefoot or through trial and error. With all of this being said, I wouldn't rate this a 5, but it's most certainly up there, at maybe a 4.5 ish range. If it's on Sprocken, it has to be pretty good.