In "Challenge Memory," players engage in a classic memory matching game. The gameplay involves a grid of cards, each concealing a symbol or image. The objective is to match pairs of identical symbols by flipping over two cards at a time. If the cards match, they remain face up; if not, they are flipped back over, and the player must remember their locations. The game tests the player's memory and concentration skills, with the goal of uncovering all the pairs in the fewest moves and shortest time possible. The game offers various difficulty levels, with larger grids and more complex symbols to challenge players of different skill levels.