GBC, by Stewart N.
All of GBC is a collab. It all ties together, and the balls go around to everyone’s builds. To fit together the standards are an input 10 bricks high and 8 bricks wide, that can handle approximately 1 ball per second.
GBC is displayed with Technic at Bricks Cascade. When registering at events, add a note that says your MOC is part of the collab and check with the collab head if your MOC is large. GBC has a supply of balls provided but more are always good! 

Dream Bunkers

Part of the Post-Apocalyptic theme at Bricks Cascade. At the 2025 Bricks Cascade there were almost 200 bunkers! For specs see https://portlug.org/portlug-member-collabs/. For questions contact Dave M. on Discord or Rob on Facebook.

Portals

Part of the Architecture theme at Bricks Cascade. Builds should be about 8w x8d x 16h (bricks), and the doors can be openable but don’t have to be. Specs can be found in the Bricks Cascade Architecture Theme facebook group, or contact Jeannie J.

Death Star Village (DSV)

Part of Star Wars theme at Bricks Cascade, and also at most PortLUG display events. Build a scene/room that could be in the Death Star but the movies wouldn’t show. A DSV module uses a standard 32 x 32 baseplate, with 2 back walls approx. 16 bricks high. Modules are displayed at 45 degrees. To join or for questions email dsv@portlug.org, or contact Hunter S. or Eli B. A DSV web page is coming soon!

Moonbase Cascadia
Part of the Space theme at Bricks Cascade. Builds connect via doors. Built on MILS plates, 32×32, with a step down to a baseplate for ground level and roads. Specs at https://portlug.org/portlug-member-collabs/ and there is a channel on the Bricks Cascade Discord server; contact is Eric L.

Ships Cascade
Ongoing part of Space theme at Bricks Cascade. 2026 specs are to build a spaceship in Cascade colors (white, green, and dark green) – green body, tail and leading wings in white, with two stripes if possible. For questions and discussion there is a channel on the Bricks Cascade Discord server, or contact Jason R. 

Old West
Part of the Town and Country theme at Bricks Cascade. Built on MILS base. Builds with motion especially wanted, as well as mosaic backgrounds. Specs at https://portlug.org/portlug-member-collabs/, on a channel on the Bricks Cascade discord as well as a facebook group; contact is Jason B. 

Minilandia Parade

Part of the Classic theme at Bricks Cascade. Small builds including bicycles, 4-wide vehicles, *small* parade floats, etc. Generally just build something that would be in a parade to Classic Town scale. Classic theme in general is “Classic, Community and Culture” – mid 90s and earlier (somewhat flexible for theme anniversaries) and LEGO history. Contact Classic Paul for info. 

There are many more collabs happening at Bricks Cascade and new ones popping up. Most details and announcements are on the Bricks Cascade discord server. If you need an invite to the server, please email admin@portlug.org.