Hmm, bit mixed on this one, unfortunately.
Game definitely had a pretty good first impression with the very humorous and animated opening cutscene. The concept of protecting your planet from incoming planets with a unique planet-clashing mechanic was quite novel, considering you could've easily opted for the more traditional turret shooting mechanic instead. Also, there was certainly an attempt at keeping things interesting by always upping the ante with bosses and larger planets to contend with. There's certainly a lot of potential here!
However, I just overall found the gameplay to be rather unsatisfying and dry, despite the attempts made. Few points to consider:
*The core mechanic of crashing planets into other planets by dragging them just didn't feel that great: there was no sort of fun feedback or physicality to be had, both due to the simplicity of such an action and the lackluster special effects. Would've loved a more interesting and challenging core mechanic, such as maybe being able to fling or flick planets into each other, either directly or perhaps indirectly by spawning gravity wells that change their trajectory.
*The game was confusing from lacking feedback for elements like your current experience points and how far you are from your next upgrade, as well as the cooldown timers for your laser/missiles/etc and where they are being pointed.
*It felt like so many times I would run out of ammo through no fault of mine and be unable to contend with a boss or a planet about to crash into me. It was also weird that we aren't able to grab the tiny space debris, considering we are able to grab small planets that are bigger than it: I guess I can understand why you did it to compel you to play differently, but it still feels illogical.
*Powerups were confusing at times: for example there is a bigger cursor powerup which I thought might've let me be able to grab the next biggest tier of planets, but no luck. Would've really helped with the above issue as well if it were the case.