We used the same data for this version of the list as the main Polaris List 2025 but in this case, we counted submissions in the same series as if they were for one entry, if they were for a mainline according to Wikipedia (Mario Kart was not included in Mario Series, Final Fantasy Tactics not included in Final Fantasy, etc). 

The one additional exception is that entry #44 is fabricated in that the MUDs in question were not a series per se, but we felt they deserved a call-out as inspirational to the developers concerned.

In all other ways, the same process as the main list was followed.

 Title/SeriesTop TitleTitles in SurveyDeveloper
1The Legend of Zelda SeriesBreath of the Wild9Nintendo
2Mario SeriesSuper Mario 646Nintendo
3Civilization SeriesCivilization5Firaxis Games, Aspyr
4Final Fantasy SeriesFinal Fantasy VII11Square, Square-Enix
5Portal SeriesPortal2Valve Corporation
6Elder Scrolls SeriesMorrowind4Bethesda Softworks
7Half-Life SeriesHalf-Life2Valve Corporation
8Ultima SeriesUltima IV7Origin Systems, Electronic Arts
9Dwarf Fortress  Bay 12 Games
10Shadow of the Colossus  Sony Computer Entertainment
11Metroid SeriesSuper Metroid4Nintendo, Retro Studios, Mercury Steam, Team Ninja
12XCOM SeriesXCOM: UFO Defense / UFO: Enemy Unknown3Mythos Games, MicroProse, Hasbro, Infogrames, Irrational, 2K Marin, Firaxis
13Spelunky SeriesSpelunky2Derek Yu
14Slay the Spire  Mega Crit
15SimCity SeriesSimCity4Maxis
16Diablo SeriesDiablo3Blizzard North
17Deus Ex SeriesDeus Ex Ion Storm, Eidos
18Outer Wilds  Mobius Digital
19Minecraft  Mojang Studios
20Fallout SeriesFallout Interplay, Black Isle, Micro Forte, Bethesda, Obsidian
21Dark Souls SeriesDark Souls FromSoft
22Journey  Sony Computer Entertainment
23NetHack  NetHack DevTeam
24DOOM SeriesDOOM3id Software, Bethesda Softworks, ZeniMax Media
25Thief: The Dark Project  Ion Storm
26ICO  Sony Computer Entertainment
27The Sims SeriesThe Sims4Maxis
28World of Warcraft  Blizzard Entertainment
29Star Control II  Toys for Bob
30Super Smash Brothers SeriesSuper Smash Bros.3HAL Laboratory
31Sid Meier’s Pirates!  Firaxis Games
32Mass Effect SeriesMass Effect3BioWare
33Metal Gear SeriesMetal Gear Solid Konami
34FTL: Faster Than Light  Subset Games
35Papers, Please  Lucas Pope
36What Remains of Edith Finch  Giant Sparrow
37Lode Runner  Doug Smith
38Tetris SeriesTetris3Alexey Pajitnov
39Starcraft  Blizzard Entertainment
40Chrono Trigger  Square
41Zork SeriesZork2Infocom, Activision
42Rogue  A.I. Design
43Elite SeriesElite2Frontier Developments, Microplay Software
44MUDsVarious5Various
45Monkey Island SeriesThe Secret of Monkey Island3LucasArts, Telltale
46Master of Orion SeriesMaster of Orion II3Simtex
47Pokemon Series  Game Freak
48Planescape: Torment  Black Isle Studios
49Animal Crossing SeriesAnimal Crossing2Nintendo
50Grand Theft Auto III  DMA Design
51Magic the Gathering Online  Wizards of the Coast
52Katamari Damacy  Namco
53Telltale’s The Walking Dead  Telltale Games, Skybound Games
54Kentucky Route Zero  Cardboard Computer
5580 Days  Inkle
56King’s Quest SeriesKing’s Quest3Sierra On-Line
57Quest for Glory SeriesQuest for Glory2Sierra On-Line
58Lemmings  DMA Design
59Persona SeriesPersona 4 / Persona 53Atlus
60Team Fortress SeriesTeam Fortress 22Valve
61Crusader Kings SeriesCrusader Kings II2Paradox Development Studio
62Braid  Number None
63Dishonored SeriesDishonored2Arkane Studios
64Fortnite  Epic Games
65Return of the Obra Dinn  Lucas Pope
66Disco Elysium  ZA/UM
67M.U.L.E.  Ozark Softscape
68Starflight  Binary Systems
69Dungeon Master  FTL Games
70Mega Man SeriesMegaman 22Capcom
71Prince of Persia SeriesPrice of Persia / Prince of Persia: Sands of Time2Broderbund, Red Orb, Avalanche, Ubisoft, Pipeworks, Gameloft
72Sonic SeriesSonic the Hedgehog3Sega, Sonic Team, Gamefam, Gameloft, SNK
73System Shock SeriesSystem Shock / System Shock 22Looking Glass Technologies
74Quake SeriesQuake2id Software, Raven Software, Hyperion, Bullfrog, Lobotomy, Raster, Hammerhead
75Baldur’s Gate SeriesBaldur’s Gate2BioWare, Snowblind, Black Isle, High Voltage, Beamdog, Larian
76EverQuest  Verant Interactive, 989 Studios
77REZ  United Game Artists
78Battlefield 1942  Digital Illusions CE
79Fallen London / Echo Bazaar  Failbetter Games
80NieR SeriesNieR: Automata2Cavia, PlatinumGames
81Dear Esther  The Chinese Room
82Caves of Qud  Freehold Games
83Undertale  Toby Fox
84Inside  Playdead
85Stardew Valley  ConcernedApe
86Night in the Woods  Infinite Fall, Secret Lab
87Colossal Cave Adventure / Adventure  Will Crowther
88Space Invaders  Taito
89Lords of Midnight  Mike Singleton
90The Hitchhiker’s Guide to the Galaxy  Infocom
91Pool of Radiance  Strategic Simulations
92Wing Commander  Origin Systems
93Street Fighter 2  Capcom
94Earthbound  Ape Inc., HAL Laboratory
95Mariokart  Nintendo
96Master of Magic  Simtex
97Command & Conquer  Westwood Studios
98Heroes of Might & Magic SeriesHeroes of Might and Magic II New World Computing
99Worms SeriesWorms Team17