In 30S, each game lasts 30 seconds. No downtime, no warm-up round: your brain must be ready to react, observe, memorize, and aim, right away. Five challenges, five ways to test your mind Memory — An image is briefly revealed to you. Then, find it among several options. Observe — Spot the important details before it's too late. Target — Click on the correct target among several trap crosses, all identical in size and color. One mistake, and the round is lost.