Just as the title suggests! If you could think of any game "mode" in minecraft that, to your knowledge, hasn't been thought up of for minecraft yet, post it here! It can be simple, or it can be a very very long ass post with a lot of detail.
If you do not understand me when I same game mode, here are some examples:
-Capture the flag
-Zombies (not sure if "Minecraft Zombies" exists yet, but it could be a game mode).
GO FOR IT!!!