Talk:Game Development Based on Experience/1.4.3/@comment-77.243.188.242-20130502083929/@comment-82.42.145.211-20130502121009

I've found keeping the same slider settings, genre etc works. The only thing I change for expansion packs is the game engine and the features.

If you release an expansion pack whilst there are extra features/ research available for a new game engine, and you did not include them in the expansion pack you take a heavy hit on the scores.

So make sure you update the game engine if you are able to for expansion packs. I consistently get 7s/8s using the above method.