In short
You clear a board of picture tiles by tapping identical pairs. In the default Basic Rules mode a pair only goes away if a line of at most three straight, horizontal or vertical segments can join the two tiles through empty cells. Kids Mode removes that check and the countdown. Timed is described in the game as the basic rules plus a time limit.
What we checked on the web version
- No sign-in: tapping Start on the splash screen takes you straight to the main menu.
- The menu has Play (later Continue), Levels, Settings and Help. Settings is where you switch the rule mode.
- Levels are grouped into worlds named Nature, Cuisine, Animals, Urban and Mystic. Stage 1, "Morning Forest", lists 98 levels, which unlock one at a time.
- Early Stage 1 levels are 3×3 boards with three pairs and a 45-second limit in Basic Rules.
- A level awards one to three stars, with more stars for finishing faster. The map keeps your best result.
Our full walkthrough, with screenshots and tips, is in Touch Matching: how to play, the three rule modes, and tips for three stars.
