
In the original Dangerous Dave game for the PC, of course, there are warp zones in levels 5, 8, 9, and 10. However, I believe there is also a warp zone in level 6! Here is how you find it: Get the jet pack and go to the door without the trophy. You'll fly right through the door! Then move to the left and over the top.
The computer locks up when you get to that warp zone but the computer is not totally locked up! I waited about 30 to 40 minutes and the computer was no longer locked up! However, the pieces on the screen are NOT what they appear to be and you can die easily. But don't give up, I got out! I simply used the trainer available for this game that gives you unlimited fuel for your jet pack! I flied above everything and got out of the warp zone! It must be a legitimate warp zone because you can't get into it a second time. Perhaps the level 6 warp zone works better on certain computers or maybe Romero just didn't quite finish that part.
BUT, there IS a level 6 warp zone and you CAN get out of it!