Project L

Setup and goal: Boardcubator lists the base game for 1–4 players, about 20–40 minutes, and ages 8+. For multiplayer setup, shuffle the white and black puzzle decks separately and reveal four puzzles in each row; use 12, 14, or 16 black puzzles for 2, 3, or 4 players. Each player takes a mat and one level-1 and one level-2 piece. Solo play uses the separate Solo Variant setup in the rulebook. The player with the most points at the end wins.

Turn actions: Starting with the first player, turns proceed clockwise. On a turn, a player must take three actions. The five choices may be taken in any order and repeated, except that Master can be used only once per turn. The actions are Take a puzzle, Recycle a row, Upgrade a piece, Place a piece, and Master. Players decide how to divide their actions between getting new puzzles, improving their supply, and filling puzzles already in progress.

Taking and recycling puzzles: With Take, choose one face-up puzzle from either row and replace it from the matching deck, or take a deck's top puzzle without looking at its front first. You may have at most four unfinished puzzles; if you already have four, you cannot Take another. With Recycle, choose one row, put all four puzzles on the bottom of that deck in any order, and reveal four new puzzles to refill the row.

Upgrading and placing pieces: Upgrade either takes a new level-1 piece from the reserve or returns one piece from your supply and replaces it with a piece of the same level, one level lower, or one level higher. Place moves one piece from your supply into a puzzle's recessed area. It must lie flat and cannot overlap another piece; you may flip or rotate it. Once placed, a piece stays in that puzzle and cannot be moved or removed before the puzzle is completed.

Master action: Once per turn, you may use Master to place up to one piece from your personal supply into each puzzle above your mat. You may skip any puzzle, but cannot place a second piece into the same puzzle with this action. Master is one of the turn's three actions rather than an extra action, so it must be planned alongside Take, Upgrade, and ordinary Place actions.

Completing a puzzle: At the end of an action, a puzzle is complete when its recessed area is filled. One action may complete more than one puzzle. Return every piece from each completed puzzle to your personal supply, take the reward piece pictured on it from the reserve, and put the puzzle face down in your Victory Point pile. If you still have actions left, continue your turn. If the reserve lacks the exact reward piece, follow the rulebook's replacement rule for available pieces of the same or a neighboring level.

End of the game: The game end is triggered when the black puzzle deck is empty. Finish the current round, then play one additional round so all players take the same number of turns. After the trigger, black puzzles are no longer replaced; each player may take at most one black puzzle on a turn after the trigger. Puzzles already taken before the trigger do not count against this limit.

Finishing Touches and scoring: After the final round, each player may place any number of supply pieces into their unfinished puzzles, losing one point for each piece placed. Complete all such placements before treating any puzzle as completed; puzzles completed now provide no reward piece. Add the values in your completed-puzzle pile, subtract the printed value of every unfinished puzzle, and subtract one point per Finishing Touch placement. Ties go to the player with more completed puzzles, then more leftover pieces; any remaining tie is shared.