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Multi-part models. You build them from a sprue in parts and pose and glue them. Then they are Grey Plastic. Then you must paint them. Then you can use the models to play a strategy game.

Cool just like chess I guess

Yeah. Kinda. But with a Sci-fi and Fantasy theme and a lot of rules that get updated over time. There are many different units, factions and different ways to play the game. It is a lot of fun!