The game is divided into two phases: Movement Phase: An indicator will roll across the screen, then a unit will be highlighted. The player whose team this unit is in may tap the screen to move the unit. If two units run into each other, they will fight. You can press space if you don’t want to move. Purchase Phase: There will be a static indicator onscreen. Use arrow keys to choose the unit to buy, and tap to buy it. Press space when you’re done.