Originally posted by Megahurts:

Single player is just a server for one.

Have you enabled the console? It was changed a few weeks ago from the original release setup. Can't tell you the steps but I know it's pretty simple...Google or probably someone will be along to tell you how.

From the Steam client, go to the Library, right click on Valheim, and select "Properties".

At the bottom of the "General" tab is a section named "Launch Options". Add "-console" (without quotes) in the textbox here, then close the Properties window.

You will now be able to bring up the console with F5.