Best played on a browser on laptop / desktop.
But it has also been updated to be playable on a tablet and mobile phone.
Movement (on a computer):
UP: ↑ or 'W'
DOWN: ↓ or 'S'
LEFT: ← or 'A'
RIGHT: → or 'D'
Touch and hold the Virus to move it around.
1. Keep It Alive for 60 seconds or more.
2. Keep It Alive until the Portal appears to go to the next level.
3. Keep It Alive against the antibodies. Don't bump into them or 10 hits and you're annihilated.