Usually generated by magitech devices called 'Portals', or, as the rumor says, at Shadowmasters' whim. They lead to alternate dimensions, called 'Shadowrealms', where normal laws of physics do not apply. Matter cannot go there, hence any traveller will transform into an astral form upon crossing (see 'Dreamwalker' in Crew section). Only 'Shadowrealms' equipment can be taken, but some things found in the Shadowrealms can be brought back. Gates can allow up to 13 crew in, unless stated otherwise. Also, any craft stays behind.