Puyo Gems

This game is (intended to be) a Puyo Puyo style puzzle game. Use the left and right arrow keys to move the piece horizontally, and the down arrow key to make the piece move down faster.
Match 3 or more pieces of the same color/shape together to destroy them, and the remaining pieces will fall. If any of the remaining pieces match, they'll disappear too. Try to make chains of matches. [Matching does not work currently, sorry. I hope you can still have fun stacking some shapes on each other.]

The assets are from Kenney Game Assets 1 - the Puzzle Pack 2!

Currently, the matching system runs on raycasts, which clearly isn't working correctly. Any suggestions on how to detect adjacent blocks? Any and all feedback is appreciated.

Also I'm sorry if it doesn't load :(