Mahjong collision clean! Publisher: SHOVEL Genre: Trivia Released: 19 May, 2015 Size: 4.7 MB Price: FREE! Click here to request a review of this app App Store Info Description Slide and Collide Mahjong tiles. Collide a mahjong tile into another same mahjong tile. Drag a tile in a direction to move it. Remove all tiles to advance to the next level. Screenshots Screenshot 1 of 4