Search Google for 'minesweeper' and a green-and-grey grid appears above the results; this is that game, playable here any time. It is Minesweeper with Google's touches: easy (10×8, 10 mines), medium (18×14, 40) and hard (24×20, 99) boards, a timer, a flag mode toggle for touchscreens, and a grassy look that makes the mines feel less like a spreadsheet.
The rules are the classic ones — numbers count adjacent mines, flag what you're sure of, clear everything else — with Google's friendlier first click that always opens a safe patch. If you prefer the Windows-style original, it's on the Minesweeper page.
It is the Google Search version's format — the same three board sizes, timer and flag mode — playable without searching for it each time.
Tap to reveal; switch on flag mode (the flag toggle) to make taps place flags instead. Long-press also flags on most devices.
Under three minutes is good; under 90 seconds is expert territory. The Windows-style expert board on our Minesweeper page is the traditional benchmark.