Before terraforming Mars, Surviving Mars is required: Paradox Interactive; Steam.
Please contact me about board gaming in Orange County.
Having the same problem as FakeDutch. I´ve seen my collection "grow" artificially thanks to BGG adding expansions to my Games listing, even some promos appear as games!
Still, no real solution to this?
BGG doesn't add them, you do. When you put something in your collection and tick owned, that's +1 to the number of games you own, even if it's just a promo. You can put them in the game comments or you can not tick them as owned--you might set them to Wishlist=do not buy.
You can also filter your collection view to not show expansions. If you Permalink (top right) that view, you can put it in your Quickbar or in a browser bookmark and just use that link to get to your collection.