The mechanics is very fun and creative to play with!
This game needs practice and skill to become good at (sort of a typing game? But more than just typing because you also need to use mouse).
Some small suggestions from a personal pov:
I feel switching lanes with the arrow bar would be more intuitive, or w for up and s for down because arrow bar and mouse are not compatible. Then the color can be r for red, g for green, etc. Like in the typing game Cook Serve Delicious, foods are represented by their initial letter which make them really easy to remember and fun to type with.
Anyways, really fun game, I love how besides typing, you also have to do different shapes with mouse which adds a layer of chaos. I didn’t care too much about the select upgrade part though, maybe because I didn’t want to read, just wanted to get back into action.
(also posted on LD)