What we need is to break the game into sections.

Dont the pro's story board the game?

basic requirements

Analyse system : look at graphics card spec, ram, HDD space, maybe even CPU speed.

File load routines : Graphics,sound,Level Data
Title screen/Menu : a splash screen that might be animated then a selection menu
Start of Level screen : might be animated then jumps to game screen
End of Level Screen : might be animated then jumps to High score or Main Menu

You died/DEAD screen : Animation of some kind ?? or craft explosion

High score : animated table of scores (sorry a bit lame)

I am out of time to add to this at the moment (back to work) but its a start and there are some jobs people can do and then join them to the main game.