A little swimmer that never stops glides along the lanes of a tank full of turning posts. Press a direction and it hooks the next post and swings round. Every lane may hide a gold bar: uncover them all to reveal the hidden picture before the clock runs out. Stun the sea urchins with a sonic ring and bump them into the wall, mind the rubber bands and whirlpools — and from round 3, a bar you cross again flips back. Free, no sign-up — play right in your browser.