Tzolk'in: The Mayan Calendar

Each round, players take one turn clockwise from the starting player. On your turn, either place at least 1 available worker or pick up at least 1 worker from the gears. You cannot pass or both place and pick up in the same turn. Placing a worker does not immediately perform that space's action.

Place each worker in the lowest-numbered empty action space on its chosen gear. Pay corn for the space numbers plus the cost for the number of workers placed that turn, using the total-cost table on your board. Each player starts with 3 workers and can obtain up to 6.

When picking up a worker, perform its current action, pay 1 corn per step back to perform a lower-numbered action on the same gear, or take no action. Resolve multiple workers individually in any order you choose, paying costs as you go. Free-choice spaces let you choose any action on that gear without the step-back charge.

After everyone has acted, the calendar normally turns 1 day counterclockwise, advancing workers 1 space. Workers pushed beyond the highest-numbered space return without performing an action. Dummy workers used in two- and three-player setup remain on the gears as directed by the rules.

The Starting Player Space is a worker placement with a space cost of 0, but it still counts toward the number-of-workers placement cost. Take the accumulated corn at the end of your placement turn. During calendar advancement, retrieve that worker and take the starting marker; if you already had it, pass it to the player on your left. Your board's state may permit a 2-day advance, but the extra day cannot push off a worker that would otherwise stay. If this crosses a Food Day, the next round still includes that Food Day's feeding and rewards.

There are 4 Food Days. After all player turns and before the calendar advances, each worker in play normally needs 2 corn, including workers in front of you and on gears; farms can reduce this cost. Feed as many as you can, losing 3 points per unfed worker. Mid-age temple rewards include the goods shown at your current step and below it. End-of-age scoring uses only your current step's points, plus the leading-player bonus.

Construction requires the appropriate action and payment of the printed cost. Refill buildings only at the end of your turn; monuments are not replaced. A Chichen Itza offering requires 1 crystal skull and an offering oval without a skull already in it. Each offering space can be used only once per game.

The game ends after the fourth Food Day. Advance the calendar once more as directed before final scoring: exchange resources for corn at market rates, score ¼ point per corn and 3 points per unused crystal skull, then score monuments. Most points wins. Ties go to the player with more workers remaining on gears; if still tied, share the victory.