Lots of pixel chasing to get the humans' position just right. I had to restart levels quite a bit and enjoy a long wait in between. The Humans and Humans 2 are pretty much the same game with different levels. Humans 3 introduces extra characters with different abilities, which in my opinion made it more awkward to play. I'm sure these games have great nostalgia value, but having never played them before I wouldn't recommend them to others like me.