Basically, you customize your character to your needs and battle them in a forum-like way. You can unlock various things, too. You may have a team of 5. You can have achievements, but be serious on them.
I'll go first.
1st Character:
Cloth Shirt
Leather Pants
Rope
That sword thing that is from Spain which is very swift and decent
Tennis Shoes
Dog
Boomerang
Draw pictures of your character if you want to.