Uncle Grandpa Hidden is a free online game from genre of memory and monsters truck games. Flip the tiles and try to match them up in pairs. Pair up all the tiles to win. Try to complete the game in as few moves as possible! There are is 4 levels. Use mouse to click or tap to screen on the squares. Concentrate yourself and start to play. Enjoy! Uncle Grandpa, Hidden, Memory Game, Matching Game, Puzzle Game, HTML5, Kids Games, Mobile Games, Brain Training, Concentration, Fun, Free Online Game, Monster Truck Games, 4 Levels, Tile Matching