I can totally see a certain kind of person getting hooked on this simple but cool gameplay loop. Probably the kinds of people who are crazy fast at solving Rubik's cubes.
The gameplay is solid, the visuals are simple but very suited, and it runs very well for a jam. My only criticisms would be that a different SFX for getting answers wrong would've been welcome, and maybe larger numbers with headings for the score and timer. The music was also fairly repetitive, but not bad per se.
Nice work!