Ever heard of Dragon Age? They made Dragon age 2 a LOT worse than 1. So games could get worse as they progress. It depends on who makes them. But this is Bethesda. They don't make bad games
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Am I wrong, but it seems you're talking about the game Dragon Age as a whole? What I was talking about was the engine.
And yeah, I haven't played DA 2 but I've heard it's pretty bad. Off topic but, imo, Bethesda's games definitely aren't perfect (then again... there are no "perfect" games). They've all had some pretty big flaws here and there. But as a whole, their games have been absolutely extraordinary and still the best games I've ever played, and the ones I've played the longest. As a whole, FO3 impressed me the most, then MW, then OB