This issue has come up many times in the past, and it would be good to have a reasonable discussion on the subject.
The common arguments against converting levels that I know of are:
* If you want to play that level you should play the original game.
* Without the original author's permission you're stealing their work.
* Levels that work well in one game will not work as well in another
Here's my take on it. I'll reference specifically Quake 1 to Quake 3 conversion since that's what I'm concerned with:
* If you want to play that level you should play the original game. - For a start, this point contradicts the third argument (Levels that work well in one game will not work as well in another), because it ignores the fact that games are inherently distinct from one another. The drive to play a level from one game in a different game comes from the desire to see what the level would be like within the constraints of the new game. I think this point is the simplest of the 3 to counter, so I'll leave it there unless someone can expand on the point.
* Without the original author's permission you're stealing their work. - I think I can agree with this although there are a lot of conditions. For example, the original author might not be available to contact (I've tried to contact many mappers over the years only to find the information in their readme file is outdated and they are unreachable). Second, to what extent can conversion be considered stealing? If one claims the work as their own without crediting the original author, then that's fairly clear cut. But if someone credits the original author fully in the release, and appends their own name to the level clearly marked as the convertor and not the creator... then even without the original author's permission I personally can't see the problem on a moral level.
* Levels that work well in one game will not work as well in another - Again, there are conditions here. The converter may have worked on the level to adjust it to the game at hand (and this raises some more questions about how we define a conversion, remake, tribute or derivative), and there are examples of converted levels which worked equally well or even better in the game it was converted for (ztn3tourney1 for Quake 3 is a good example. It was originally a Quake 1 level and was almost identical in both forms).
Have at it
