Want to use cheat codes? Then, start the game with the "cheat" command line parameter, e.g. "C:\Program Files\Stardock\TotalGaming\GalCiv2\galciv2.exe" cheat. Now enter one of the following codes:
Ctrl + P: Add 1 to planet class
Ctrl + M: Add 10,000 BC
Ctrl + B: Add battleship
Ctrl + L: Assign remaining planets to major races
Ctrl + C: Clones a ship
Ctrl + J: Complete social projects
Ctrl + H: Heals a ship
Ctrl + R: Research current tech
Ctrl + N: Restart on new map with new race
Ctrl + S: Saves game
Ctrl + T: Teleports a ship to pointer
Ctrl + V: United planets meeting
Ctrl + A: Upgrades a ship
Ctrl + <0-9>: Hail's major races
Shift + Ctrl + R: Research all techs