A neat take on the theme! The commitment to the bit with the cursor - even going so far as to make it go and click to unlock its own upgrades as the basis of difficulty progression - was just delightful.
Like others have said, it would've felt better if the player character were a little less floaty, though obviously that's part of the difficulty in its own way. But I had a ton of fun with the game, and would love to see it refined and expanded upon!