Merge a Monster is a drop and merge game in your home lab. Drop DNA samples into a glass terrarium and merge matches to evolve cute, ridiculous hybrids. But beware: Contamination goo steals space and blocks drops. Earn lab tools: Zapper and Purifier clear goo, Catalyst auto merges chosen creatures, Agitator rocks the tank for surprise merges. Unlock Forest, Desert, Ocean, fill the Bestiary, and chase massive scores.