Space Pairs takes a familiar idea and tunes it until it clicks. Here you get a 4×4 grid with 8 pairs, wrapped in a clean, distraction-free board that works just as well on a phone as on a laptop.
The pace is entirely yours. Careful players flip methodically around the grid; impatient ones gamble on memory and eat the penalty when they guess wrong. Either way the round ends with a 4×4 grid with 8 pairs resolved, and the star rating tells you how clean your run was.
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.