The first part of the story is written, and the ~10 levels that follow it; doors that you unlock with buttons, but you can also open and close; walking/ shooting enemies; extremely simple vehicle support, etc. I need to plan out the rest of the story on paper before I can make all the other levels (I'm thinking at least 30 total). But the game engine is pretty much done, I just need to finish the content. Maybe I'll add a standard way to do cutscenes.

Currently, I'm thinking of intermediate story parts (i.e. level ideas and cutscenes), and a final end to the Oblivion story.