Setup

Follow these steps before the first turn.

Steps

1. The youngest player starts.
2. Each take turns placing terrain tiles on the ocean to form an island.
3. The highest an island can reach is 3 stacked terrain tiles.
4. No tiles can touch the edges of the board at any point — ocean must surround the island.
5. Once all tiles are placed, each player places their reactor on the board and their marble on it.

Island rules

• Keep a ring of ocean around the land at all times.
• Stack height is capped at 3.
• After the island is complete, reactors go down — then play begins.
• During play, broken terrain tiles return to a player's inventory and may be placed again for free at the start of their turn (same edge and height limits).

Next: Reactors & Uranium.