Use the arrow keys or W, A, S, and D to move your character around the game area.
Collect tokens to activate the power-up state. Your character will change its appearance to indicate that the power-up state is active.
When in the power-up state, touch monsters to kill them. Each monster represents either a plus or a minus.
Killing this monster will increment your answer.
Killing this monster will decrement your answer.
At the top of the screen, an equation in the form of "a + b = c + Answer" is displayed. Try to solve the equation by killing the correct monsters to make the equation equal.
Press 'Enter' to submit your answer. If your answer is correct, your score will increase by 10 points. If your answer is incorrect, an 'X' will appear at the top-left corner of the screen. You have a total of 3 attempts.
New equations will be generated after submitting an answer, and the monster spawn rate will gradually increase.
The game ends when you touch a monster without being in the power-up state or after 3 incorrect answers.
