I am grateful to my submariner colleagues who over the years tested the original game “Submarine” and appeared to enjoy it. My thanks too to fellow retired submariner, David Perfect, and to fellow villagers: Dominic Regan, Andy and Caroline Whiteford and Glen Yarwood for their time and interest play-testing “They Come Unseen” to make it ready for the UK Games Expo 2014 in Birmingham. I'd like to thank Richard Denning (Games Expo organiser) for his advice about attending the Expo and the need to play-test a prototype game as much as possible beforehand and also to Rob Harris and his PlayTest team (and Phil Richardson in particular) for their help and support in the PlayTestZone at the Games Expo. 

Finally, my huge thanks to Duncan Molloy, Games Developer at Osprey Games, for his encouragement and support … and for his ability to see through the original 42-page rule book to discover the game lurking beneath!   AB