On the Underground: Engineering Crew2 5 players Originally available as part of the Dice Tower 2021 Kickstarter campaign. Setup: Place on engineering crew tile per player next to the board and return the extras to the box. Gameplay: A player may spend one of their actions to take an engineering crew tile. Each player may hold at most 1 of these tiles. It may be spend to take a branch tile or place a track token. Doing so does not cost an action. Boardgamegeek