De-stress yourself with this unusual game. Originally written back in 2000, your challenge is to achieve the highest score by keeping the quarks in balance for as long as possible as they bounce around the screen and collide. Each collision changes the particle colours, eventually leading to the extinction of all but one colour. You can help maintain the balance by speeding the particles up, but doing so makes it harder to control, so slow and careful judgement is essential.
Only calmest and most Zen-like will triumph.
With Family Sharing set up, up to six family members can use this app.