Empyrion - Galactic Survival Message Board  

It just hit me earlier. The game has a separate folder for player only saves, which contain the players location, and inventory.

Create a separate game in Creative Mode, then go to (Steam\SteamApps\common\Empyrion - Galactic Survival\Saves\Games), and open the folder with your Survival game name. Copy the contents of the Players folder, and overwrite the player data you have for Creative.

Load up the Creative save, add the items you want in your inventory, and exit. Copy the Players contents from the Creative back to your Survival save, and load it up. You should have all the items you added from creative mode.

Much easier to just copy the game.dat from a creative game into the save folder(rename the game.dat to game.sur first) then reload it will be in creative mode then do the reverse to go back into survival mode.