K4's work fine - read the instructions; you choose by clicking on a different ship .
I get token-spam on Chrome, though. Overall, a monumental achievement, though one that probably needs to have a few of its disclaimers tightened up.
My bad, I misread the console. I didn't play with them but thought the Uboats were messed up because they seemed pretty easy.
I play through Chrome on a Chromebook and have no token issues. I have had it do some weird stuff on occasion but overall it is working pretty good.
Especially good for my son to play, he loves the sound effects and such (he is 7).