Antitype comes from BorderLeap, LLC. The goal is to find out what the opposite word is, then tap the correct sequence to get these words.
Look at picture # 1. We know the answer is At / This.
This is where it becomes interesting: tap any letter. That letter will not change. But its vertical and horizontal neighbors become the next letter in the alphabet.
400 levels will keep you busy for a while! At the moment I have done about 55 levels.