Slå klokka
Raske hender, raskere hode.
Candy Line Boom 
Everything on this page runs on a timer. That is the whole idea. You are not solving a problem here, you are trying to do something correctly while a number counts down and your hands refuse to cooperate.
Why a timer changes a game
A puzzle with no clock is a conversation. A puzzle with a clock is a performance. The same board that felt gentle becomes something else entirely once you can run out, and most people find they play worse and enjoy it more.
Timed games are also the only ones with an honest score. A typing test gives you a number that means the same thing today as it did last month. That is rare, and it is why people keep retaking them.
What is on this page
Typing games are the purest form: a target, a clock, and no ambiguity about whether you hit it.
Match 3 in its timed mode turns a calm board into a scramble, and the good ones make you choose between the safe move and the greedy one.
Puzzle games under time pressure ask a different question than they do at rest: not can you solve this, but can you solve it now.
Slowing down
If the clock is the part you do not want, everything here has a calm twin. Just relax is the same kind of game with the timer removed. 5-minute break keeps things short without making them frantic. And train your brain is where the games that reward thinking slowly live.