On a Macintosh, I downloaded the ZIP file, but I can't open it, or I get an error 17535.

Ben's Game is packed into a "zip" file so that Mac and PC users can all use the same download. Some users may not have a program which opens zip files. If you're experiencing this, there are several free or shareware programs which can help. One popular (and free) program is Stuffit Expander by Aladdin Systems, at www.stuffit.com/mac/expander

 

On a PC, I'm getting an error that it can't find "glut32.dll".

This file should be included in the game folder. This is the OpenGL Utility Toolkit, a utility which helps Ben's Game work on both Mac and PC. First, check to see that it's there. If it is there, but you're still getting an error, you can try getting the latest version of this library from www.pobox.com/~nate/glut.html. Thanks to Nate Robins and Mark Kilgard for providing this excellent utility!