Algebraic Ace

Using an arcade shooter genre, the player gets to shoot attacking ships. In order to refuel, repair, or upgrade their ship, they can answer algebra questions. The questions cover:

Slopes in standard and slope intercept forms
Distance between points
Order of operations
Solving for X
Absolute values
Exponents
Perpendicular and parallel slopes
X and Y intercepts

There are multiple enemies, weapon upgrades, and shield upgrades.

If there are equations you think should be added, or any recommendations on the game, please let us know. We'd love to make it even better.