These are listed in x-files.fandom.com

“Monster of the Week“, or MOTW, refers to episodes of The X-Files that typically deal with some type of supernatural or paranormal creature/entity, but may also be a simple criminal with a unique ability. They are usually separate from episodes dealing with the conspiracy, although certain elements can crossover between the two. Monster of the Week episodes populate the majority of each season, as to avoid the risk of over exposing the mythology arc.

My cmnt: The MOTW episodes are what made The X-Files the entertaining and fun series that it was. The alien-mythology arc is unneeded and tedious. It is presented as what drives Fox Mulder to do what he is doing – looking for his abducted sister while searching out the truth of the great alien-government conspiracy. It is an attempt by the creators of the show to provide some grand unified theory to the series and as such mostly fails.

My cmnt: click here to see a pretty good selection of 17 MOTWs.

My cmnt: click here to see a complete list of MOTWs on IMDB with quickie plot lines.

My cmnt: Here are the MOTWs I recommend out of all of them. I would skip Seasons 8, 9, 10 and 11 as Mulder had left the show after Season 7 so naturally it lost half of the reason for watching, much of its creative energy, and all of the sexual tension/love relationship between Mulder and Scully:

# in season	Episode	Monster
Season 1
3	“Squeeze“	Eugene Victor Tooms
5	“The Jersey Devil“	Jersey Devils
6	“Shadows“	Howard Graves (Poltergeist)
11	“Eve“	The Eves (a government clone experiment)
13	“Beyond the Sea“	Luther Lee Boggs kinda Lucas Henry
18	“Miracle Man“	Samuel Hartley kinda Leonard Vance
20	“Darkness Falls“	Wood mites
21	“Tooms“	Eugene Victor Tooms
22	“Born Again“	Michelle Bishop (a reincarnation of Charlie Morris)
Season 2
2	“The Host“	Flukeman
3	“Blood“	Franklin Appliances and Pesticides kinda Edward Funsch
7	“3“	Trinity Killers
12	“Aubrey“	B.J. Morrow kinda Harry Cokely
13	“Irresistible“	Donald Pfaster
14	“Die Hand Die Verletzt“	Phyllis Paddock kinda Milford Haven High School Committee
20	“Humbug“	Leonard
24	“Our Town“	Walter Chaco
Season 3
3	“D.P.O.“	Darren Peter Oswald
4	“Clyde Bruckman’s Final Repose“	Clyde Bruckman and Puppet
6	“2Shy“	Virgil Incanto
8	“Oubliette“	Lucy Householder kinda Carl Wade
12	“War of the Coprophages“	Cockroaches
13	“Syzygy“	Margi Kleinjan and Terri Roberts
17	“Pusher“	Robert Patrick Modell
20	“José Chung’s From Outer Space“	Lord Kinbote
22	“Quagmire“	Big Blue kinda Alligator
Season 4
2	“Home“	The Peacock family
4	“Unruhe“	Gerry Schnauz
10	“Paper Hearts“	John Lee Roche
12	“Leonard Betts“	Albert Tanner
13	“Never Again“	Betty and Ed Jerse
20	“Small Potatoes“	Eddie Van Blundht
22	“Elegy“	Nurse Innes, Harold Spuller, and Ghosts
Season 5
4	“Detour“	Camouflage Creatures
5	“The Post-Modern Prometheus“	The Great Mutato
8	“Kitsunegari“	Linda Bowman and Robert Patrick Modell
9	“Schizogeny“	Karin Matthews
10	“Chinga“	Chinga
11	“Kill Switch“	Gelman’s AI
12	“Bad Blood“	Ronnie Strickland (vampire)
16	“Mind’s Eye“	Marty Glenn kinda Charles Wesley Gotts
17	“All Souls“	Seraphim, Nephilim, and Aaron Starkey
19	“Folie a Deux“	Greg Pincus
Season 6
4-5	“Dreamland I” and “Dreamland II“	Body Swap kinda Morris Fletcher
6	“How the Ghosts Stole Christmas“	Maurice and Lyda
7	“Terms of Endearment“	Wayne Weinsider and Betsy Monroe (vele demon)
8	“The Rain King“	Holman Hardt
10	“Tithonus“	Alfred Fellig
14	“Monday“	Pam kinda Bernard Oates
15	“Arcadia“	Ubermenscher
17	“Trevor“	Wilson Pinker Rawls
18	“Milagro“	Phillip Padgett
19	“The Unnatural“	Josh Exley
20	“Three of a Kind“	Analytic Histamine kinda Grant Ellis and Timothy Landau
21	“Field Trip“	Hallucinogenic Mushroom Organism
Season 7
3	“Hungry“	Rob Roberts
4	“Millennium“	Zombie
5	“Rush“	Max Harden, Chastity Raines, and Anthony Reed
6	“The Goldberg Variation“	Henry Weems
7	“Orison“	Robert Gailen Orison and Donald Pfaster
8	“The Amazing Maleeni“	Maleeni
12	“X-Cops“	An unknown fear entity
13	“First Person Shooter“	Maitreya
16	“Chimera“	Ellen Adderly
17	“all things“	Colleen Azar and Daniel Waterston
19	“Hollywood A.D.“	Micah Hoffman and Augustine O’Fallon
20	“Fight Club“	Betty Templeton/LuLu Pfeiffer
21 Season 8	“Je Souhaite“	Jenn (A jinniyah)
4	“Roadrunners“	Parasite
9	“Salvage“	Raymond Aloysius Pearce
10	“Badlaa“	Beggar Man
12	“Medusa“	Parasitic cnidarian
17	“Empedocles“	Evil kinda Jeb Larold Dukes and Katha Dukes
19	“Alone“	Herman Stites
Season 9
3	“Daemonicus“	Josef Kobold
5	“Lord of the Flies“	Anne T. Lokensgard and her son Dylan
7	“John Doe“	Caballero
8	“Hellbound“	Van Allen (reincarnated from a dead mine prospector)
11	“Audrey Pauley“	Audrey Pauley kinda Jack Preijers
12	“Underneath“	Robert Fassl
13	“Improbable“	Burt kinda Mad Wayne
14	“Scary Monsters“	Tommy Conlon
17	“Release“	Rudolph Hayes kinda Nicholas Regali and Brad Follmer
18	“Sunshine Days“	Oliver Martin
Season 10
2	“Founder’s Mutation“	Kyle Goldman
3	“Mulder & Scully Meet the Were-Monster“	Guy Mann and Pasha
4	“Home Again“	Trashman and Band-Aid Nose Man
5	“Babylon“	Shiraz
Season 11
2	“This“	Commander Al
3	“Plus One“	Little Judy Poundstone and Little Chucky Poundstone
4	“The Lost Art of Forehead Sweat“	Reggie Murgatroyd and Thadeus Q. They
6	“Kitten“	MK-NAOMI kinda Davey James
7	“Rm9sbG93ZXJz“	Tipping Smart Machines
8	“Familiar“	Anna Strong and Mr. Chuckleteeth (Familiar)
9	“Nothing Lasts Forever“	Barbara Beaumont and Randolph Luvenis kinda Juliet Bocanegra