Instructions : Click on groups of three or more creatures to plop them from the board and drop other creatures from above. The larger the group, the more points you'll get. The game is over if you allow any creatures to get past the top of the play frame.
To reach the next level you must survive the advance of the indicated number of lines for the level you're on. Complete a level and you will get bonus points for plopped creatures areas and empty rows at the top.