engine is just a part of the game... At least they said they only took 20 to 30% of the DoS2 engine... so....
Yes and no. the Unity 'engine' and Unreal Engine have made everything from FPS's to RPGs.
The engine has nothing to do with the assets, story, voice acting, or such. It's just a framework for what can be done to make a game. So people should not get so angry over 'the DoS Engine' because it has nothing to do with DoS except having been made FOR DoS, and thus the name.
The Unreal Engine was first made for Unreal, then Unreal Tournament, and now has games like Ace Combat and Adventure Pinball: Forgotten Island. Which is as far from Unreal as you can get.
So the name of the engine means little other than the games potential, in a VERY loose sense.
