These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Noitu Love
Genius Bonus: In the first game, O2-Joy's theme music is a minor-key version of the Ode To Joy.
Surprisingly Improved Sequel: Aside from well-designed and fun boss battles (especially the last one), the first game is a decent if unremarkable side-scroller. The sequel is a top-notch Action Game with incredible pace.