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I've tried both Classic and Gold, but neither of them work properly... If at all.

Classic runs, and seems fine; until you realise certain objects in the level are invisible or just not showing properly at all. Weapons appear in the side of torsos and plants are all kinds of messed up. Any fix for this? Can't find a single solution or mention of this beyond one other dead topic here...

Gold just doesn't run at all contrary to all the people saying it works fine on Win10. I go to start it up, screen goes black, says 'Precaching' on screen then the game just closes. Again, tried all known fixes listed in what few pages there are. Funnily enough, not a single mention of this error seems to exist anywhere on the internet.

Did I just waste money on two broken versions of the same game? :|