Of all the Junior Arcade games I've played so far, this one feels the most like a game. It still struggles with some cheap level design and mechanics it just straight up doesn't explain (but I think the latter is actually mostly a good thing), but it features real gameplay to learn and exploit. In order to beat the game you MUST know how to beat the enemy AI and how to best route each level

Do yourself a favor though and play the last 5 levels with infinite lives and/or infinite bubbles though, will literally save you hours