Interesting little game. It could use a lot of polish, but it's pretty nice.
The concept of this game is that you are a worm moving through a series of celestial bodies to reach a goal. You move by alternating between the worm's head and the worm's tail. The worm's currently active part follows your mouse, and everytime you click, the worm adheres to whatever it is touching and the part of the worm you control alternates. This mechanic of alternating between head and tail in quick succession is pretty fun, and makes for some really interesting challenges, as the sun slowly engulfs everything in its path and you need to be extra fast.
With that said, I feel like the difficulty curve not so much rises, as it basically catapults when we reach the city levels. It also doesn't help that the hitbox in some of the buses seems extremely off. Still fun, but not knowing where to land the worm's head on a floating bus is frustrating.
Also, I feel like it's oftentimes impossible to deliberately dodge the little sunlets that come at you from random parts of the levels. Not sure if dodging small projectiles was a very good addition to this game, given how slow its movement mechanics can be.
The presentation is basic, but that's okay, it's not even being factored into the equation. It's just as detailed as it needs to be. I do like the sheer variety in level themes, though. I'd like some HUD to tell us how much health we still have after we get hit, though.