Dungeon Explorer happened in 1989.
Dungeon Explorer was created on 1989-03-04.
There aren't explorer gummies.
You have to be defeated in a dungeon.
Yes, Electivire can be recruited in In Pokémon Mystery Dungeon but notably in In Pokémon Mystery Dungeon: Explorer of Darkness and Explorer of Time since it can be found in the Spacial Rift dungeon as well as in the Deep Spacial Rift area of the dungeon.
Dungeon Keeper happened in 1997.
Dungeon Lords happened in 2005.
Dungeon Magic happened in 1993.
Dungeon Scroll happened in 2003.
Metal Dungeon happened in 2002.
Dungeon Hack happened in 1993.
Dungeon Hero happened in 360.
Dungeon Defenders happened in 360.