How to play
- Your role: you drive a tank along the bottom of the screen.
- Objective: shoot and destroy incoming targets before they cross the danger line.
- Colours: targets are always the opposite colour of your tank. You need red/blue glasses (red filter on the left eye, blue on the right).
- How it ends: the game ends when three targets in a row cross the danger line; hitting a target resets the count.
- Colour swap: at regular intervals the colours switch, with a brief flash, so each eye takes turns at each job.
- Brightness balance: the brightness balance between the two pictures changes in steps as you play, so the game gets harder as you do well. The level at which the session ends is saved to your account as your score.
Controls
On a keyboard, use the left and right arrow keys to move and the space bar to fire. On phones and tablets, on-screen buttons appear. You can pause, restart or end the game with the buttons at the top.
Before you play
Calibrate the screen (the game guides you), keep the room evenly lit and take breaks. See the getting-started guide and the explanation of dichoptic therapy. The game is a wellness and training activity, not a treatment, and no health benefit is claimed.