Area 51 was a secret facility owned by the Royal Mushroom Kingdom Army (RMKA), which in turn was owned by the Mushroom Kingdom government, and was located in a desert somewhere in the Mushroom Kingdom, based on the real-life location in Lincoln County, Nevada. It was built to keep aliens and extraterrestrial beings from anybody else. It made its debut appearance in SMG4: Mario Raids Area 51.
Location[]
Area 51 was located somewhere in Francisco Fajardo of the Mushroom Kingdom, and it's adjacent to Area 64 (from SMG4: AREA 64) across a road.
Cat Kingdom • Dream Land • Francisco Fajardo • Glowshire Kingdom • Isle Delfino • Koopa Land • Kushroom Mingdom • Luncheon Kingdom • Magic Kingdom • Mushroom Kingdom • Rockford • Shiver Region • Toytoy Kingdom • WAA kingdom
Towns and Cities
Akihabara • Bloopersville • Clock Town • Delfino Plaza • Inkopolis • Lost City of Gold • Mushroom City • New Donk City • New York City • Onett • Oviscity • Rabbid Town • Smexy Town • Teletubbyland
Abodes
Bob's Mansion • Bowser's Castle • Castle Dedede • Cinderella Castle • Donkey Kong's House • Fishy Boopkins' House • Hotel Bob • Mario's House • Mario's second house • Peach's Castle • Snitch Productions Castle • Steve's House • The SMG4 Castle • Wario Bros Residence
Locations
Area 51 • Area 64 • Bob-omb Battlefield • Casino Paisano • Casino Royale • Casino Star • Child Protecc Service • Club Pingas • Coke Zero Factory • Comet Observatory • Crazy Cap • Dire, Dire Docks • Desert Prison • Didney Worl • E. Gadd Laboratories • Freddy's Spaghetteria • Fresh Spaghetti Tubbie • Gaben’s Steamy Diner • Halberd • Hobowarts • Jolly Roger Bay • Kalimari Desert • Koopa Cafe • Koopa Paisano Pizza • League of Legends Internet Cafe • Luigi Raceway • Mario Raceway • Mario's Tower • Mario's Tunnel Of Doom • McDonald's • Moo Moo Milk • Mount Doom • Mushroom City Natural History Museum • Mushroom City Stadium • Mushroom Mall • Mushroom City-Metro International Airport • Mushroom University • Mushy Mushroom Maximum Prison • Nintendo Headquarters • Nook's Real Estate • Ohio • Ohio Cabbage Farm • One-Eyed Monster World • Peppino Pizza • Perry Plaza Farmers Market • Pingas Restuarante • School. I guess • Shifting Sand Land • SMG3's Gauntlet of Gloom • SMG4's house • Sony Headquarters • Super Mega Gangsta Club • Steve's Cooking Crap Shop • Subway • Tall, Tall Mountain • Texas • Uniderpal Studios • Valley Highway • Water Supply Plant • Whomp's Fortress • Wikipedia Castle
Islands
Anime Island • South Island • Yoshi's Island • Dong Island
Dimensions
Bootleg Dimension • Cancelled Dimension • Fourth Wall • Internet Graveyard • The End • The Rejection Dimension • Weegeeland • TV Dimension
Planets
Aelion • Mobius • Planet Weegee Star • Planet with a lack of toilets • Sonatus • Weegee Planet
Multiverse-related
Da supa Mareeo Brois Moveei • Grand Mario Hotel • Heaven • Old Universe • SMG0's Universe • SMG0's New Universe • The Great Beyond
