Most browser games need a network at the moment you open them. Tapminute caches a small set of first-party games so a short break does not depend on a signal. This ranking is only about that offline set; the open-source iframe games are not part of it.
How offline mode works
After the first visit, the service worker stores the site shell and four games: Lights Out, Stack, Tap Rush, and Echo. If the connection drops, those pages and their scripts come from the cache. Everything else falls back to the offline page. The PWA guide explains the cache and install steps.
1. Lights Out
Lights Out is the best offline choice because the puzzle is complete in the page: a 5×5 board, no timer, and undo. It also has a daily board seeded by the UTC date. On a train, the daily is a natural first stop; if you want a different puzzle, reset deals another solvable board. Best for: a quiet two-minute break where you would rather think than react.
2. Stack
Stack asks for one tap and gives an immediate answer. The tower narrows, the speed rises, and one miss ends the run. There is no menu between attempts, which makes it the easiest game to start in a queue and leave at your stop. Best for: a two-minute gap and one free hand.
3. Tap Rush
Tap Rush is the shortest complete session here: 30 seconds, one lit pad at a time, and a combo that rewards rhythm. It is the one to pick when the wait might end at any moment, or when you want a score rather than a puzzle. Best for: a platform announcement or a queue that is almost moving.
4. Echo
Echo is the memory option: four pads light in sequence, then you repeat it. Three lives and twelve rounds keep a run inside two minutes. It is less reflexive than Tap Rush and less visual than Lights Out, which makes it a good fit for a noisy carriage where you want to look at one fixed spot. Best for: a slightly longer wait with no room for a board.
What does not work offline
The 16 open-source games, including Sudoku, Nonogram, and Klondike, load inside an iframe from their own game pages. They are deliberately not precached: caching every vendored game would bloat the install and make updates harder to reason about. If you open one offline, Tapminute shows the offline page and a way back to the cached games.
Make the offline set reliable
Open each of the four games once while online, then install the site if your browser offers it. On iPhone and iPad, use Share → Add to Home Screen. The cache is versioned with each deploy; a stale cache is cleaned up after the new service worker takes over. If a cached game looks out of date, close the tab, reopen it once online, and let the update toast finish.
For a mixed list that includes online-only games, see the five-minute commute collection and the offline short breaks collection.