This strategic board game accommodates 1 to 4 players aged 13 and up, with an average playtime of 90 minutes. The game includes 1 game board, 180 era cards, 83 resource tokens, 30 domes, 47 tunnel tiles, 16 metropolis tiles, 111 structure tokens, 4 player info cards, 4 player boards, 4 scoring cards, 4 assistant cards, 4 multiplier tiles, 12 action tiles, 1 action cloning tile, 1 era marker, 12 player markers, 8 government contracts, 25 special cards, 35 credit tokens, and 1 rulebook. Players compete to build underwater cities by developing kelp farms, desalination plants, laboratories, and tunnel networks to connect their structures.