Outnumbered is an arcade game with math elements. You must help to repel an alien attact on a research facility located on Deimos. You have to do that by handling an experimental laser gun. The longer you manage to resist the more people you save.

The game has an untypical aiming system. Each alien has an assigned number. An alien is hit when you enter its number from the keyboard of your phone. The numbers may be passed explictly or they may be in the form of formula - then you must quicly count it and enter the result.

Outnumbered has four game modes:

- Survival - you fight as long as you can

- Tasks -  simple math riddles

- Cooperative - survival  over bluetooth with other player

- Duel - game over bluetooth - the player that gain more points win