What would you do after implementing portal rendering (see the Runtime World thread)? I don't know about you, but somehow walking around the map made me want to remove the gravity and start flying around. Then i added spaceships and after that i added the ability to shoot them.
The result is this:
No, it won't be a real finished game (at least not now, i want to work on RobGetOut after all), which is why i'm not placing it in the WIP section. Currently it is just a test/prototype that i made for fun in about a couple of days using the She Loves You/Runtime World Walker codebase :-). If i ever decide to make a full game out of it, i'll probably use the C engine i'm writing for RobGetOut instead of the Java engine i used in She Loves You.
I've uploaded the game here. Includes a Windows build of the world editor (that was the debug build i used last time i opened the IDE, not a release build, which is why a console window opens when you run it - it shouldn't make a difference though, except that loading the .rtw file is a bit slower than normal).