Edgy Warhammer 40k diorama shows Space Marines playing with themselves

What do the power-armored super humans of Warhammer 40k get up to when they’re not facing off on the battlefield? The canon answer is “a mixture of high intensity workouts, military drills, and prayer”, but there’s plenty of scope to imagine fun alternatives - such as this diorama of an Imperial Space Marine and a Chaos aligned rival playing their own, even tinier, miniature wargame.