Shape

Games where geometry is the mechanic - fitting forms together, transforming between them, or matching one to another. The appeal is that you can read the problem at a glance without anything being explained.

Mirror Shape. It asks you to reflect and match forms without any time pressure, so it sits well away from the running games that make up most of this tag.

A game where you start over on failure but keep some permanent progress. Shape Ascent - Roguelite uses that structure, so a lost run still leaves you slightly better equipped for the next one.

Usually reading the gate too late. In games like Shape Transform Race the shape you need is signalled ahead of time, so the fix is looking further up the track rather than reacting faster.

Yes, all of them run free in your browser with nothing to install and no account needed before you start, whether you want the puzzles or the running.