X-COM: Terror From the Deep PC Cheats and Codes

X-COM: Terror From the Deep
 
Cheat Effect
Press [Ctrl] and C together while in the battlescape screen Level skip, completes the current level with the results of the previous level

X-COM: Terror From the Deep Glitches

Salvaging a Bad Situation: Or Free Tech Advances
It can be all too easy to save after a point where you can't advance any further, whether it's an unforseen rush of Aliens, or loss of funding via Country Infiltration. Not all is lost at that point. You will likely have to start over, but you can start over with all research progress and UFOpaedia information by copying certain files from one save to another.
First: Start a new game, and then save.
Second: Quit the game and copy the following files from your original save directory to the new save directory.
IE: You saved your original game in slot one and second save in slot 2, the directory would be /*whatever you named the X-Com directory.. drive:/mps/ufo/game_1/ for an example of the DOS version, then drive:/mps/ufo/game_2/ for the second save.
Files:
aknow.dat
research.dat
up.dat
soldier.dat (optional, if you've already got some good soldiers trained)
Third: load up the new game. You should have all the needed information.

Fatal Bug!
Do not interrogate the Tasoth Commander before you have fully researched the advanced crafts. Doing so will bring up the final mission, but not allow you to develop the aforementioned crafts which are needed to reach the final stage, leaving the game impossible to complete.

Leaving the Commander till last on your research list will ensure a play-through that can be completed.

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