Great Wall is a new asymmetric worker/soldier placement game with themes of engine building and a twist in the form of a constantly attacking AI (Mongolian Horde) that requires players to sometimes cooperate to defeat it. Players will control ancient clans in China trying to defend against the incoming Mongolian hordes and build a Great Wall.

As each player will want to win (earning VP = Victory Points), they must also sometimes cooperate to defend against the hordes. Each clan will be asymmetric with its chosen leader (resource production/starting resources/starting workers and units) and this asymmetry will increase as the game progresses (players will hire Advisors with unique abilities, often creating unique engines).

The game is divided into 3 main phases: Production, Wall Defense, Wall Construction. During the Production phase, players will place orders via cards (face down) simultaneously and then decide on the timing of their execution.