This is an addictive, simple and fun game, it seems easy but full of challenge. the rule is simple, blocks will emit one line by one line, you need to catch all the same shape or color or number blocks of right top block, block must be tapped even there's only one similarity. do not leave out any one block that must be tapped or tap incorrect block. two modes are provided, similar mode is to catch all the similar blocks, and different mode is to catch totally different blocks. this game will challenge your brain.