I'm not going to lie, I haven't played an educational math-based game since MathRacer on Flash game sites or even the Jumpstart on PC (shoutouts if you know that series). As Brad mentioned, the presentation of the idea is done well! Unique mechanics are iconic to your style of game design!
- The idea for the gameplay loop is there, but it could have been iterated on and polished more!
- The game could have been a bit more enjoyable if there was a slight change: having a constant stream of enemies or having the enemy mothership more protected/defended!
- There is nothing stopping the player from skipping upgrades (and skipping the core-math mechanic presentation) and going straight to the mothership, if anything, you're a bit too powerful at the start for that
- Otherwise, the art is well done and honestly reminds me of those 80s space-genre games (mostly because of the pixel square-shaped stars, honestly, but everything fits together)!
- If anything, catching the infinite-math bug hampered this game quite a bit; I believe there should be some kind of indicator to how many problems the player should complete per upgrade station-clarity for the player is never detrimental in these kinds of games.
In all, just like this game, I do really enjoy the style and unique mechanics you put into your games!