I'd say it's a very nice starting program for people to get into game development. I tackled it years ago, when I was in middle school, and we were within the 1.92 release. It was made with the utmost care and patience, and has many nice features and can output some quality things. Unless you're good at scripting, though, there's not TOO much that can be done that will shake the Zelda feel (naturally, ZELDA Classic), but even so, the limits can only be pushed so much. The effort you put into trying to make your own rules and definitions in ZC would be time better spent just making your own actual engine in a more versatile program, such that you aren't bound by what ZC can't do, even with scripting. But again, there have been quality titles made within ZC, so it is a VERY capable game development program. Just not AS capable as the many other available programs.