Not a fan of this expansion. Too many OP cards which dictate what you should do vs what you would like to do. This along with Peace Treaties just ruins the game for me. The scenarios are nice, but overall this expansion felt like it shifted gears in a different direction than what I loved about EmDo. This also added a 5th player option. Playing with 5 people is the most miserable experience ever. If you like the base game, there's no need to add this expansion.
I have the PnP version and am loving it! If you liked Gears of Time, Forbidden Machines does everything it does, but better! No more Fate Cards. Now all actions are taken from the tech you build. Very solid expansion!