I was wondering if hidden teleporters and mirror codes that teleport you to places which contain huge amounts of money should be allowed in runs. I built those leaderboards based on existing runs of those games, which resulted in incosistency with one rule. In MM6 it's generally accepted to make use of NWC dungeon (as the bonuses aren't that great, can be easily skipped with good RNG and the dungeon itself feels more like an easter egg). On the other hand, gammadragon in his MM4 run banned the "gold mine" (technically that place can be discovered with huge amount of luck, just like NWC dungeon) to make the run longer and more entertaining. There's an MM3 run that makes use of such a "gold mine" and I don't know what should I do about it. If NWC dungeon is allowed, this should be allowed too, but somehow that doesn't feel right.

I'd like to know what's your opinion on this.

It's a tough one. I chose not to use the "Count Du Money" code in MM4 because there is no way to discover that code in the game, except by inspecting and decoding the game files to find it. It feels more like a developer's QA tool than a legitimate code.

The way I view it, if that location is legitimately accessible within the game and is not obviously a cheat / QA testing tool, then it's fair game. This is highly subjective though and other people likely have alternative opinions.

My favourite example of a cheat / QA test room is the Ultima 7 "behind the blacksmith's chimney" teleporter. You're obviously not meant to go there and it has copies of most of the important plot/quest items in it.