Pic 1 I'm pretty sure is from a LucasArts or Sierra point and click game. Damn, I can't remember which one, though. Give me a little more frame, and I'll tell you. Whatever it is, I've played it a lot. I know I've seen that screen before.
Pic 2 I have no idea. I don't think I have ever played it.
Pic 3 (as stated) Heimdall - I remember it, but I probably wouldn't have figured it out without a hint or larger image. (I think there was a spoof of that in Worms DC, too.)
Pic 4 (as stated) is Shadow of the Beast 1. I knew that one stone cold. Too bad I didn't find this thread until too late. ;-)