Create a world in Fun with Ragdolls. Here you are able to fully customize the location where the characters are located. You are capable of creating complex mechanisms with different conditions, dangerous structures or just interesting buildings.
Then send your character there and see what happens. Later, you can share it so that other players are up to downloading it. It’s worth noting that the test subjects have pretty good artificial intelligence.
They can either be aggressive and confront everyone they see; or be ready to defend themselves at any moment; or wander around and explore everything around them; or search (if you do hide-and-seek) and more! Therefore, this will make the process even more exciting, thanks to them.
