I notice that there is no manual included with the game downloads or extras. There seems to be no mouse support in this game either, at least I can't seem to get any cursor to pop up.

Anyways, looks like the game is strictly keyboard only. Guessing around, this is what I found out. Posting it here to help out. Controls are rather clunky but fictional.

Movement -- "W A S D" and/or the "NUMPAD 1 to 9"
Action/Talk -- "Spacebar"
Inventory/Sub menu -- "TAB"
Inventory movement -- "Arrow keys"
Direct selection inventory -- "numbered keys"
Menu -- "ESC key"

If anyone else find any additional key commands, it would be great if you can share it here.

"Live long and prosper"

Thanks for this, was wondering about the controls as well :)

One small addition: Hold Shift to run!

You'll find the manual with all controls in X:\......\GOG Games\Star Trek Hidden Evil\Extras\Help\Manual ;)