Straight to the point: Birds Plus Pairs is a 6×6 grid with 18 pairs, playable in your browser right now. It is tuned for quick runs, honest difficulty, and controls that make sense the first time you touch them.
Every round deals a fresh shuffle, so there is no memorising the layout - only the cards you have actually seen this round. Fewer moves means a better score, and your best result is saved on the device. The a 6×6 grid with 18 pairs, so the middle of the board fills up fast and every flip matters more.
Nothing here needs a tutorial or a wiki. Controls are one gesture, the goal is one sentence, and the difficulty comes from execution rather than homework. That is exactly what a browser game should be.