Something quick about Skyrim, though. If the area be it cave, camp, outdoor temple, what-have-you, is pertinent to any quest, it will repopulate after three game days or so. And the dragons at their respective holds come back eventually as well. But those are the pawns of the games, the red shirts, the expendables, stormtroopers and rebels of Tamriel.
The actual essential people or non-faceless adversaries do not come back to life, and I love that... except when those damned vampires attack a village and kill someone I had trading business with. Vampires killed the two people who could run a store in one of the smaller towns, so I cannot offload my war spoils there. But I got their house key from their bodies, so I can hang out in their place.
Skyrim is what stops me from finishing my college course early; that game is pretty engaging.
As for Mass Effect and KOTOR, I'm like Liam, KOTOR trained me for the first Mass Effect game. In fact, the first Mass Effect felt like KOTOR without the light sabers. And that's the game I spent the most time playing out of the three Mass Effect series... even after you include all the DLC for the second and third.
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