Published in European Science Editing issue 44(3), a card game for instigating discussion around the ethical practices of peer review, for general training or developing specific peer reviewers skills. The article has background info on the development of the game, and suggestions for how to play it, plus a pdf download of all the cards. This game was trialled at the PEERE summer school with around 30 participants and it genuinely was a very effective session, with constructi