Sum 2.0 alternatives

A timer and a simple rule: stop it at exactly four seconds. Got this game idea while I found myself routinely trying to stop a timer at a 'round' value while at the gym. Also heard some stories about how people used to play this sort of stopwatch games on digital watches, back when Casios were the thing.

Web math quiz to challenge your friends. A new quiz is randomly generated when the game starts. If a game link is shared the exact same quiz will appear.

Memorizing math facts like 9 x 7 allow the player to do complicated math problems more easily and with better speed and accuracy. Manta Math has no ads and works 100% locally all the time.

Numble is a daily number challenge inspired by Wordle and the game show Countdown.

A fun, educational, chemistry arcade puzzle game. Tetris meets organic chemistry. At the tip of your fingers is the power to fuse together the elements vital to life. Fight antimatter, battle gravity and shape matter to your will!