What are the best warhammer 40k factions? Rank them all with this warhammer 40k factions tier list maker. Drag your favorites into S tier and drop the worst into D tier. Share your warhammer 40k factions tier list on social media, compare rankings with friends, and see what other Americans think. The ultimate way to rank and debate warhammer 40k factions online. Popular categories include gaming, tabletop-games, warhammer-40k, warhammer-factions.