Submarines and surface fleets battle for dominance of the seas in They Come Unseen! Designed by retired Royal Navy Officer and submarine commander Andrew Benford, and developed deep beneath the waves, They Come Unseen is an asymmetrical strategy game of bluff and deception where one team must use submarines to sneak troops into enemy ports and destroy vital strategic targets, while the opposing team deploys a surface fleet to hunt down the subs and protect their crucial supply lines.