Hey! Guilds are new here, and they've been a blast so far. You MUST check it out
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Guilds cost 2000 gralats and they can carry a max or 25 members
Here are some pics
(The map with the three forts, the castle, SwampTown fort and MoD fort)
(These are pictures from SwampTown fort so you get the idea :P.)
Also, there is a Guild Spar in Swamptown.