Use portals to travel into parallel dimensions of a two-story home, where gravity can be on a wall or on the ceiling.
DO NOT FEEL OVERWHELMED. At first glance the map seems burdensome to find your way around, but this is not so. Try to get to the right-side-up dimension and take a tour around the home to see the general layout. The portals on the wall will shift gravity to that wall. Portals on the ceiling will shift it to the ceiling.
Take your time. Once you feel comfortable in the map, you will like it.
This is the first map I fully completed. Although it took me a long time to finish, I enjoyed designing it, and I hope you will enjoy playing it. It is meant to show the creative things you can do with simple commands in Sauerbraten. If you like it, and think it is worth seeing, please say so here, and show it to a friend.
Update: New screenshot!
Once again, please take some time to look around the map (without flying around using "e"), and do not give a bad rating just because it may seem confusing at first. I hope you enjoy it.