The rules of the game are simple.
Find all pairs of identical cards.
The faster you find them, the higher your score.
The difficulty increases as the game progresses, including rounds and scores.
Simple puzzles for Killing Time!
Main functions:
Challenge your high score and check your ranking.
You can test your increased concentration with increasing difficulty.
Picture match classics that never get old!
Various cards appear to help develop your brain and develop your observation skills.