How to use this PWAD:

At the DOS prompt, type:
      "doom -file invade2.wad -devparm -warp 1 2" (DOOM v1.2 and below) 
                        OR
      "doom -file invade2.wad -warp 1 2" (DOOM v1.666).
NOTE: If you want to see the new intro screen and hear the new intro
      music, start up DOOM in the usual way with 
      "doom -file invade2.wad"

*** WARNING ***
There IS a savegame bug in this wad due to the size and complexity of
this level.  However, finishing the level without saving IS possible 
even in Ultra-Violence.  Go on, we dare ya!  Send us an .lmp if you 
manage it.

About the Demos:

DEMO1 - Shows you the Med-Lab & the Rec-Deck
DEMO2 - Shows you the Security/Brig & Service Paths
DEMO3 - [Multi-Player Demo] Shows you how to complete the level.  
        (Note: It was late and we were tired.  Also we hadn't played it for 
        a while.)  :)

*** WARNING ***
All three demos were recorded using v1.666.  There was no testing done
to determine if the demos would play on any other version.