Level 51

Items and characters unlocked or related to Level 51.

2012	Treehouse of Horror XXIII · Thanksgiving · Christmas

2013	Valentine's Day · St. Patrick's Day · Whacking Day · 4th July · Treehouse of Horror XXIV · Thanksgiving · Christmas

2014	Super Bowl · Valentine's Day · St. Patrick's Day · Easter · Stonecutters · 4th July · Clash of Clones · Treehouse of Horror XXV · Thanksgiving · Christmas

2015	Valentine's Day · Superheroes · St. Patrick's Day · Easter · Terwilligers · Pride Month · Tap Ball · 4th July · Monorail · Treehouse of Horror XXVI · Thanksgiving · Winter

2016	Deep Space Homer · Valentine's Day · Burns' Casino · St. Easter · Crook and Ladder · Wild West · Whacking Day · Homer's Chiliad · Superheroes · 4th July · Springfield Games · SciFi · Season Premiere · Treehouse of Horror XXVII · The Most Dangerous Game · Winter

2017	Homer the Heretic · Lunar New Year · Destination Springfield · Rommelwood Academy · Secret Agents · Pin Pals · Time Traveling Toaster · 4th July · Pride · Homerpalooza · County Fair · Treehouse of Horror XXVIII · This Thanksgiving's Gone to the Birds! · The Invasion Before Christmas

2018	The Buck Stops Here · Bart Royale · Homer vs the 18th Amendment · The Springfield Jobs · Who Shot Mr. Burns? (Part Three) · Itchy & Scratchy Land · Poochie's Dog Dayz · Moe's Ark · Super Powers · Treehouse of Horror XXIX · Thanksgiving · A Simpsons Christmas Special

2019	Not Yet Spring Cleaning · Love, Springfieldian Style · State of Despair · A Classless Reunion · The Real Moms of Springfield · Game of Games · Flanders Family Reunion · Simpsons Babies · Krusty's Last Gasp Online · Cthulhu's Revenge · Treehouse of Horror XXX · All American Auction · Abe's in Toyland

2020	Holidays of Future Past · Black History · No Bucks Given · Simpsons Wrestling · Pride · Game of Games The Sequel · Summer Games · The Van Houtens · All This Jazz · Treehouse of Horror XXXI · Blargsgiving · Clash of Creeds: Christmas Royale

2021	New Year New You · Love and War · Springfield Choppers · Rise of the Robots · Foodie Fight · Springfield Enlightened · Tavern Trouble · Into the Simpsonsverse · Breakout Bounty · Treehouse of Horror XXXII · Northward Bound · Holiday Whodunnit

2022	Red Alert · Cirque du Springfield · Hot Diggity D'oh! · Hell On Wheels · When the Bough Breaks · Dog Days · Splash and Burn · Showbiz Showdown · Tragic Magic · Treehouse of Horror XXXIII · The Atom Smasher · A Christmas Peril

2023	Springfield's Got Talent? · A Warmfyre Welcome · Shiver Me Barnacles · Heaven Won't Wait · For All Rich Mankind · Fore! · Food Wars · Mirror Mayhem · A Hard Play's Night · Treehouse of Horror XXXIV · Cold Turkey · Snow Place Like the Woods

2024	Better Late Than Forever · Fears of a Clown · The Great Burnsby · The Simpsanos · Charity Case · Summer of Our Discontent · The Mayflower Maple Bowl · A Bart Future · Taps

Expansions

2013	Squidport · Krustyland

2015	Springfield Heights (Chapter 1 · Chapter 2)

2016	Dilapidated Rail Yard

Promotionals

2012	Season 24 Premiere · Penny-Wiseguys · The Day the Earth Stood Cool

2013	Gorgeous Grampa · Dark Knight Court · What Animated Women Want · Whiskey Business · Season 24 Finale · Season 25 Premiere · Yellow Subterfuge

2014	Married to the Blob · Diggs and The Man Who Grew Too Much · War of Art · Days of Future Future · The Yellow Badge of Cowardge · Clown in the Dumps · Simpsorama · Covercraft

2015	The Musk Who Fell to Earth · The Kids Are All Fight · Mathlete’s Feat · Every Man's Dream · Halloween of Horror · Treehouse of Horror XXVI

2016	Much Apu About Something · The Marge-ian Chronicles · Havana Wild Weekend

2017	The Great Phatsby · 22 For 30 · The Serfsons

2018	Haw-Haw Land · Homer is Where the Art Isn't · Treehouse of Horror XXIX

2021	Season 33 Prize Track

Promotions

2014	Yard Sale

2015	Stonecutters Black Market Sale · End of School · Oktoberfest · Black Friday

2016	Big Game Supplies · Spring Cleaning · Donut Day · Black Friday

2017	Football · Valentine's · Easter · Forgotten Anniversary · Superheroes Return · Magic Station · Black Friday Mystery Box Extravaganza · A Rigellian Christmas

2018	Homergeddon · Valentine's · Springfield Jobs · Cinco de Mayo · Bart the Fink · Pride · 4th July · Moe's Ark Teaser · Rosh Hashanah · Treehouse of Horror XXIX · Black Friday · A Simpsons Christmas Special

2019	Marge at the Bat · 4th of July · Black Friday

2020	Black Friday

2021	Black Friday

2022	Tenth Anniversary · Black Friday

2023	Black Friday

2024	Valentine's Day · Donut Day · 4th of July

Levels

Initial	1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 11 · 12 · 13 · 14 · 15 · 16 · 17 · 18 · 19 · 20

2012	21 · 22 · 23 · 24 · 25

2013	26 · 27 · 28 · 29 · 30 · 31 · 32 · 33 · 34 · 35 · 36 · 37

2014	38 · 39 · 40 · 41 · 42 · 43 · 44 · 45 · 46 · 47 · 48

2015	49 · 50 · 51 · 52 · 53 · 54 · 55 · 56 · 57 · 58 · 59

2016	60