Maps that have two of the same key?

[molten_]

I'm just curious if there are any maps that do this effectively? Like, maybe a map that has two branching paths and at the end of each path is a red key, so the player is ultimately going to the same location but they're given a choice on how to reach it.

[baja blast rd.]

Stardate 20x7 map02 has something like that.

[peach freak]

I think Map19 of Alien Vendetta has two Yellow Keys. There's a Yellow Key that when you walk up to it, the floor of it raises and it becomes out of reach, setting up a trap. The actual Yellow Key is in the area behind it.

[Havoc Crow]

Going Down MAP23 has a gimmick where you're supposed to "collect" multiple yellow skulls hidden throughout the mansion; they're yellow skull keys which, once reached, teleport away onto pillars in the main room to mark your progress.

[RjY]

map13 of Freedoom v0.7 (I think) to v0.10 (was replaced in v0.11) had several keycards of each colour.

[Deadwing]

I think Lost Civilization by Jaska uses that trick extensively

[leodoom85]

Sacrament map 02 uses 6 yellow keys for an optional objective.