Thanks for playing.
Duck are all characters that look normal or is a duck. There are some morphed characters that have something like beak or goose legs, those are all GOOSE AGENTS!!
The game should have more content and scaling. We were planning to add like box or barrel that you need to smash first to see what character is inside, or pieces of clothing that you need to click on to see if something is under. After some point threshold the game should get faster and more complicated. Maybe we add it all later, when we have more time.