1
Perform one main action
Choose either Collect or Build as your main action
2
Execute bonus actions
You may play one card AND/OR collect one award, in any order before, during, or after your main action
3
Respect resource limits
At end of turn, you may keep maximum 4 of each resource type; return excess to supply
4
Deploy an airship
Take an airship from your player board and place it on the main board: on the grid, on a machine, or on a dock
5
Place airship on grid or machine
Position airship to occupy 1, 2, or 3 empty squares (based on size) entirely on the grid or entirely on one machine
6
Placement restrictions
Cannot cover other airships, scaffolding pieces not covered by machines, or more than one machine; cannot activate machines placed after your airship
7
Place airship on dock
Place your airship on an unoccupied dock at the board edge and immediately perform the indicated action
8
Return all airships
Move all your airships from the main board back to your player board
9
Perform up to 4 actions
Execute up to 3 build actions and 1 move/rescue action in any order
10
Build a scaffolding
Place a scaffolding from your storage onto empty grid spaces entirely above the highest water bar
11
Build a machine - Find location
Each square segment must be placed entirely on scaffoldings; surface must be solid (no holes) and empty (not covered by machines or water bar); machines may cover resources
12
Build a machine - Promote workers
Workers from the machine placement area advance to the tower; starting with active player clockwise, move each worker horizontally right to the tower; first worker to each level with an award claims it
13
Build a machine - Place machine
Put the machine from your storage in the now-empty location; immediately gain VP and benefits shown on the machine
14
Build a machine - Raise water level
If any part of machine is built above the bridge, add 1 water bar from the stack above the highest water bar
15
Move action
Spend 1 gold to move one worker from barracks or scaffolding to an empty scaffolding space
16
Rescue action
Spend 2 gold to save one worker from whirlpool and place on empty scaffolding space
17
Manage resources
Coal, iron, water, gold, and whistles are gained and spent throughout the game
18
Use whistles as wildcards
Whistles substitute for any resource when spending; whistles cannot be replaced by other resources when specifically required
19
Store resources
Keep resources in storage area on your player board; maximum 4 of each at end of turn
20
Track cards
Cards in hand are secret but quantity must be visible; discards go face-up in a pile; reshuffle discards when deck is empty
21
Limit upgrades
Maximum 6 upgrades per player
22
No limits on other items
No limit on cards, awards, machines, or scaffoldings you may have
23
Play one card
Execute effects of one card from your storage, then place it face-up on discard pile
24
Collect one award
Execute effects of one award from your storage, then remove it from the game
25
Start with 9 workers
7 wait in barracks, 2 start in whirlpool
26
Advance workers
Send workers to scaffoldings, then promote them to tower positions for end-game VP
27
Rescue drowning workers
Workers caught by rising water fall to whirlpool; rescue them via rescue dock or abilities