You must register to play bimbogami.
But the great news is, it's free! One simple registration allows you to play all the free bimbogami challenges.
Just enter your details below - and press 'Sign me up' - easy as that.
note: you'll automatically be registered for the bimbogami forum too.
By signing up, you do of course agree to the Ts & Cs of the site.
There's not much in there, but you should probably have a quick look, if for no other reason than satisfying yourself that you won't end up owning a Polish salt mine or something.