Play begins with the star-token holder and proceeds clockwise. Each turn is one simple exchange: take an item (or set of items) from the board, then place one of your workers in the worker space belonging to it. Face-down items are only revealed once you've committed to taking them.
The crucial constraint: with 3–4 players you may place only 1 worker per row each round, so your four workers must visit four different rows. With 2 players you place 2 per row. Order is free — you can start in the third row if that's where the prize is.
What each row gives you:
- Scoring cards — take the card and set it face up beside your neighborhood. It's a private objective that pays every time you match it.
- City tiles — place the tile face up, fully adjacent to a tile you already have, rotated however you like. Your neighborhood may never exceed 3 tiles by 3 tiles — nine tiles is the absolute ceiling of your city.
- Feature tiles — place each on a matching space type: blue-background on water, green on parks, grey on building spaces that carry no pieces. One feature tile per space, maximum.
- Building pieces — place each on a building space of its own color, or stack it on a piece of the same color, up to 4 stories. The last space of the row instead lets you draw 2 random pieces from the bag — and it's also the space that wins you the star token.
Can't legally place something you took, or don't want it? It's simply removed from the game — the worker still gets spent.
Claiming achievements. At the end of your turn, check the city achievement board. For each goal you now satisfy, drop one of your 3 rings onto the highest vacant number in that column — first to arrive scores the most. You may claim several in one turn, but each achievement only once per game, and a ring never comes back off even if your city later stops qualifying.
A turn, played out. Ana wants the red building piece in row 4, but her red stack is already 3 high and she also needs the corner city tile in row 2. She takes the city tile first — placing it so its water edge lines up with her existing canal, extending a water area she's growing for the "connected water" scoring. That worker is now spent on row 2 for the round. Later, with only rows 1 and 4 left, she takes the last building-pieces space: 2 random pieces from the bag, a gamble that pays her a green (stacked to 4 stories, completing an achievement — ring placed on the 6) and a useless yellow that gets discarded. She also picks up the star token, so she leads next round.