Game modes
Every mode is played solo or against someone, and gets harder with each level passed. Each one changes what you compute: pick what you want to practice.
- ClassicNumbers to add up, more of them and bigger as the levels go by
- +1/−1Only 0, +1 and −1, but more of them and much faster.
- Multiplication+ and −, but also × and ÷.
- IntruderSmall numbers, and a big one hiding somewhere.
- DecimalsDecimal numbers to add up
- CountdownA starting number, then only subtractions: how much is left?
- PercentagesA starting number, then percentage increases and decreases.