Factorio Forums

I have the Problem that i want to be with my friend in one force but we want to have seperate Research Trees ... Is this possible?

IF i make it with Space Book he can have an seperate Research but hes an enemy and as enemy he dont can walk though my gates and dont can open my chests etc.

Players in a force share same research tree (hard-coded in to game). Even in single player, you are in a force and when you research it's actually that force that gets the technologies and recipes.

Not sure if it's possible to have allied forces (I've not done much with MP).

The forces can have a cease-fire with each other. In vanilla neutral is in cease fire with player and player can operate neutral entities (not tried gates).