Has anyone played this online co-op game? When I click on invite a pop up asks me to invite friends from the list. I don't know how to add my friends. The game tutorial only shows what keys are needed for game play. The developer is not answering emails.

I have no idea and can't find any information about this.

I do notice that there is a Tales of Escape YouTube video here but do not know if that would shed any light on your problem.

Thanks, Marian but the video is a walkthrough for the add on game. The lobby menu is the same as my game but the video doesn't give info how to add friends. I should mention that I am playing The Mine add on game.....it's free.

I found another video that might help?

If you noticed when the player clicked on invite his friends list showed 2 friends. What I'm trying to figure out is how did they get on the list? Perhaps they are his friends on Steam and they have the game installed and are online. It's something my friend and I will check out during our next session.
And thank you again for your help.

You are welcome. I hope you can get it figured out.

Update. I heard back from the developer. For anyone playing co-op mode, you must be friends on Steam and in the game before your friends show up on the list.

Good to know.