The mapper number in an iNES header (header) names the cartridge board, chiefly the chip that switches banks of ROM. This page lists every number from 0 to 255 for which the NESdev Wiki has a page, with what that page says the number stands for. Each number links to its own wiki page, which holds the register layout; those layouts are not copied here. Numbers from 256 up are on the NES 2.0 mappers page. Rows that say “duplicate” or “alternative” are numbers the wiki records as assigned twice or by mistake; a file should use the number the row points to.
0 to 63
| Mapper | What it stands for |
|---|---|
| 0 | NROM: Nintendo boards NES-NROM-128 and NES-NROM-256 and their HVC counterparts |
| 1 | MMC1 (SxROM) |
| 2 | UxROM |
| 3 | CNROM |
| 4 | MMC3 (TxROM) and MMC6 |
| 5 | MMC5 (ExROM); has expansion sound |
| 6 | ROM images extracted from disk images for the Front Fareast Magic Card 1M and 2M RAM cartridges |
| 7 | AxROM (NES-AMROM, ANROM, AN1ROM, AOROM, HVC counterparts and clones) |
| 8 | Synonym of mapper 6 submapper 4 |
| 9 | MMC2 (PxROM), used for Mike Tyson’s Punch-Out!! |
| 10 | MMC4 (FxROM) |
| 11 | Color Dreams |
| 12 | The wiki page has no description |
| 13 | CPROM: up to four 4 KB banks of CHR RAM |
| 14 | Gouder SL-1632 PCB, used by the 8-character version of Samurai Spirits (Rex Soft) |
| 15 | K-1029 and K-1030P boards: 100-in-1 Contra Function 16 and 168-in-1 New Contra Function 16 multicarts |
| 16 | Bandai FCG boards: FCG-1 ASIC without EEPROM, and LZ93D50 with none or a 256-byte EEPROM |
| 17 | ROM images extracted from disk images for the Front Fareast Super Magic Card |
| 18 | Jaleco SS 88006 (Magic John and about a dozen other games) |
| 19 | Namco 129 and Namco 163 ASICs; the 163 has expansion sound |
| 20 | Reserved for the Famicom Disk System in the official iNES specification |
| 21 | VRC4a and VRC4c (the wiki page is shared with VRC2) |
| 22 | VRC2a |
| 23 | VRC2b and VRC4e |
| 24 | VRC6a; has expansion sound |
| 25 | VRC4b and VRC4d |
| 26 | VRC6b; has expansion sound |
| 27 | Believed to be an unlicensed variant of VRC4 |
| 28 | Action 53: a multicart mapper for games that use several discrete mappers |
| 29 | Allocated on 15 November 2013 for homebrew games, including Glider |
| 30 | UNROM 512: RetroUSB’s extension of UNROM, up to 512 KB PRG ROM |
| 31 | A mapper made for cartridge compilations of NSF music |
| 32 | Irem G-101 (52-pin DIP) |
| 33 | Taito TC0190 |
| 34 | NINA-001 and NINA-002, and BNROM: unrelated boards sharing one number |
| 35 | J.Y. Company ASIC (shared page with 90, 209 and 211) |
| 36 | TXC PCB 01-22000-400 (74138, 74175 and a 24-pin ASIC labelled 05-00002-010) |
| 37 | Nintendo of Europe multicart containing Super Mario Bros. |
| 38 | Board of Bit Corp.’s Crime Busters |
| 39 | Claimed by the Nestopia and MESS sources for Subor’s Study & Game 32-in-1 |
| 40 | NTDEC 2722 PCB and imitations: cartridge conversions of the Japanese Super Mario Bros. 2 |
| 41 | Caltron 6-in-1, a discrete-logic multicart |
| 42 | Hacked FDS games converted to cartridge form |
| 43 | TONY-I and YS-612 boards: conversions of the Japanese Super Mario Bros. 2 from the Famicom Disk System |
| 44 | Multicart described from Disch’s original notes |
| 45 | Multicart boards with the GA23C ASIC in its standard configuration |
| 46 | Rumble Station: NES-on-a-chip and multicart of licensed Color Dreams games |
| 47 | Described from Disch’s original notes |
| 48 | Taito TC0690 |
| 49 | Described from Disch’s original notes |
| 50 | N-32 conversion of Super Mario Bros. 2 |
| 51 | 11-in-1 Ball Games |
| 52 | Realtec 8213 and similar MMC3-based multicart boards |
| 53 | Supervision 16-in-1 |
| 54 | Claimed by Nestopia’s source for the Novel Diamond 9999999-in-1 board |
| 55 | UNIF board BTL-MARIO1-MALEE2: bootleg Super Mario Bros. versions with many cheats |
| 56 | Reportedly a specific unlicensed reproduction of Super Mario Bros. |
| 57 | Multicarts such as GK 47-in-1, from Disch’s notes |
| 58 | Simple NROM- and CNROM-based multicarts |
| 59 | Multicart with UNIF board names BMC-T3H53 and BMC-D1038 |
| 60 | Reset-based NROM-128 4-in-1 multicart |
| 61 | Three different multicart boards |
| 62 | Super 700-in-1 style multicart, from Disch’s notes |
| 63 | NTDEC’s Powerful 250-in-1 (TH2291-3) and the Hello Kitty 255-in-1 (CH-011) |
64 to 127
| Mapper | What it stands for |
|---|---|
| 64 | Tengen RAMBO-1: an MMC3-like ASIC with extra features |
| 65 | Irem H3001 |
| 66 | GxROM and MxROM: NES-GNROM and NES-MHROM and their HVC counterparts |
| 67 | Sunsoft-3 |
| 68 | Sunsoft-4 (in the US used only by After Burner); ROM-based nametables |
| 69 | Sunsoft FME-7, 5A and 5B (the 5B adds expansion sound) |
| 70 | Used by the Family Trainer games, from Disch’s notes |
| 71 | Camerica/Codemasters: games developed by Codemasters and published by Camerica; similar to UNROM |
| 72 | Jaleco JF-17 |
| 73 | VRC3, apparently used only by Salamander |
| 74 | Waixing 43-393, 43-406 and 860908C PCBs (MMC3 derivative with CHR ROM and 2 KB CHR RAM) |
| 75 | VRC1 |
| 76 | NAMCOT-3446, used only by Megami Tensei: Digital Devil Story |
| 77 | Singleton allocated for Napoleon Senki |
| 78 | Holy Diver and Uchuusen - Cosmo Carrier |
| 79 | NINA-03 and NINA-06 (72-pin boards by American Video Entertainment) |
| 80 | Taito X1-005 |
| 81 | Used by exactly one known game, Super Gun from NTDEC |
| 82 | Taito X1-017 |
| 83 | Games by Cony (Yoko); also NES 2.0 mapper 264 |
| 84 | Has two conflicting allocations |
| 85 | VRC7; has expansion sound |
| 86 | Jaleco JF-13 (the Red and Black releases of Moero!! Pro Yakyuu) |
| 87 | J87: the first “mapper” created for the Famicom |
| 88 | Mapper 206 with CHR raised to 128 KiB by wiring PPU A12 to CHR ROM A16 |
| 89 | Sunsoft family member (with 93 and 184), used by Tenka no Goikenban |
| 90 | J.Y. Company ASIC |
| 91 | First release of Super Fighter III, better known by a J.Y. Company clone board |
| 92 | Jaleco board, from Disch’s notes |
| 93 | Sunsoft-2 IC |
| 94 | HVC-UN1ROM; Senjou no Ookami is the only known game |
| 95 | NAMCOT-3425, used only by Dragon Buster (J) |
| 96 | The two games that use the Oeka Kids tablet |
| 97 | Irem TAM-S1, used by Kaiketsu Yanchamaru |
| 98 | Earmarked for an in-development mapper to ease GBC to NES ports |
| 99 | A simple mapper used by the Vs. System |
| 100 | Assignment depends on the emulator |
| 101 | Misdump of the JF-10 board (Urusei Yatsura - Lum no Wedding Bell) that assumed reversed bank bits |
| 102 | Alternative assignment for Quietust’s Drip port |
| 103 | A pirate port of the FDS version of Doki Doki Panic |
| 104 | Pegasus 5 in 1 (Złota Piątka): an unlicensed Famiclone cartridge |
| 105 | NES-EVENT: the MMC1-based board of the Nintendo World Championships multicart |
| 106 | Board built from discrete chips, used by a Super Mario Bros. 3 bootleg |
| 107 | Magic Dragon, an unlicensed game by Magicseries |
| 108 | At least four different PCBs for FDS-to-cartridge conversions |
| 109 | Duplicate assignment for Sachen’s The Great Wall |
| 110 | Duplicate assignment for Sachen’s Honey Peach |
| 111 | GTROM board, and an MMC1 variant used in a Chinese translation of Ninja Ryuukenden |
| 112 | Like mapper 206 (a simplified MMC3) with somewhat scrambled registers |
| 113 | HES NTD-8, for multicarts of NINA-03/06 games |
| 114 | MMC3 clone with scrambled register addresses and indices, a 256 KiB outer CHR bank register and an NROM-like PRG register |
| 115 | Kasheng SFC-02B, -03 and -004 boards, with an MMC3 clone |
| 116 | Gouder SOMARI-P board with a Huang-1 or Huang-2 ASIC and a PAL |
| 117 | Future Media’s Crayon Shin-Chan and San Guo Zhi 4 - Chi Bi Feng Yun |
| 118 | TxSROM (TKSROM and TLSROM): MMC3 with independent mirroring control |
| 119 | TQROM: MMC3 with both CHR ROM and CHR RAM |
| 120 | Whirlwind Manu LH15: conversion of Square’s FDS game Tobidase Daisakusen |
| 121 | Kasheng A9711 and A9713: protected boards with an MMC3 clone |
| 122 | JY043: a simpler bootleg variant of Kaiser’s KS-7058 |
| 123 | Kasheng H2288: MMC3 clone with scrambled register indices and an NROM-like PRG register |
| 124 | Super Game Mega Type III pirate arcade board |
| 125 | Whirlwind Manu’s cartridge conversion of the FDS game Monty no Doki Doki Daisasso (Monty on the Run) |
| 126 | MMC3-based TEC9719 boards; shares a page with NES 2.0 mappers 422 and 534 |
| 127 | A pirate version of Double Dragon II - The Revenge (Japan) |
128 to 191
| Mapper | What it stands for |
|---|---|
| 128 | Duplicate of NES 2.0 mapper 265 (T-262 multicarts) |
| 129 | Duplicate assignment for the behaviour of mapper 58 (WQ1905-B 35-in-1) |
| 130 | Alternative assignment for the behaviour later given NES 2.0 mapper 331 |
| 131 | Alternative assignment for the behaviour later given mapper 205 |
| 132 | Three compatible TXC boards (including 01-22003-400 with a 05-00002-010 ASIC) |
| 133 | Two versions of Sachen’s Jovial Race, and the 60-pin Joy Van release of Master Chu and the Drunkard Hu |
| 134 | MMC3-clone multicart board known as T4A54A, WX-KB4K or BS-5652 |
| 135 | Sachen 8259 series (shared page with 138, 139 and 141) |
| 136 | Sachen 3011 board, used by four early Joy Van/Sachen releases |
| 137 | Sachen 8259D board |
| 138 | Sachen 8259 series |
| 139 | Sachen 8259 series |
| 140 | Jaleco JF-11 and JF-14: like GNROM (66) with the port at $6000–$7FFF |
| 141 | Sachen 8259 series |
| 142 | PCB used for several of Kaiser’s unlicensed ports of FDS games |
| 143 | NROM board with a simple protection (Dancing Blocks, NTSC version) |
| 144 | Death Race: an intentionally defective variant of mapper 11 |
| 145 | Another CNROM clone (Nestopia, GoodNES and Sanchez agree) |
| 146 | Sachen 3015 / SA-016, functionally identical to mapper 79 |
| 147 | Sachen 3018 board, used by one game: Chinese Kungfu (Challenge of the Dragon) |
| 148 | Sachen SA-008-A and Tengen 800008: up to 64 KiB PRG ROM in 32 KiB banks and 64 KiB CHR ROM in 8 KiB banks |
| 149 | Like mapper 145 with the register overlapping PRG ROM, so with bus conflicts |
| 150 | Sachen SA-015 and its chip-on-board variant SA-630 |
| 151 | VRC1 on the Vs. System |
| 152 | Arkanoid 2 (J) and Gegege no Kitarou 2, from Disch’s notes |
| 153 | Bandai FCG board with LZ93D50 and 8192 bytes of battery-backed WRAM |
| 154 | NAMCOT-3453, used only by Devil Man |
| 155 | MMC1 variant (the wiki redirects to the MMC1 page) |
| 156 | Unlicensed Korean boards with the Daou Infosys DIS23C01 DAOU 245 ASIC |
| 157 | Games using the Datach Joint ROM System |
| 158 | Tengen board 800037, used for Alien Syndrome |
| 159 | Bandai FCG board with LZ93D50 and a 128-byte serial EEPROM (X24C01) |
| 160 | Appeared to be a variant of mapper 90, which fully covers its behaviour |
| 161 | Seems to have been assigned to Hanjuku Hero before MMC1 was fully understood |
| 162 | Waixing FS304 board |
| 163 | Nanjing FC-001 board, used on most of their games |
| 164 | ROM chipset of the Dongda PEC-9588 Pyramid Educational Computer, also on the Yancheng cy2000-3 board |
| 165 | Fire Emblem board, from Disch’s notes |
| 166 | Subor board (the wiki redirects to the page for 167) |
| 167 | Subor’s Chinese and Russian educational computer boards |
| 168 | Board of Racermate Challenge 2 |
| 169 | Used in Yuxing’s ROMs |
| 170 | Shiko Game Syu, a Japanese unlicensed Famicom game |
| 171 | BBK Floppy-1 and SC-98 keyboard Famiclones |
| 172 | Super Mega P-4070 board |
| 173 | Unmarked board of the original Idea-Tek releases (cartridge codes ET-xx) |
| 174 | Described from Bisqwit’s original notes |
| 175 | Kaiser’s 15-in-1 pirate multicart |
| 176 | The 8025 enhanced MMC3 chipset |
| 177 | Games from Henggé Dianzi |
| 178 | Waixing FS305, Nanjing NJ0430 and Jncota games |
| 179 | Nestopia assignment that duplicates mapper 176 |
| 180 | Unusual UNROM configuration used only by Crazy Climber (fixed first bank at $8000) |
| 181 | Used by FCEUX’s checksum patch list for Seicross v2 |
| 182 | Redirects to the page for mapper 114 |
| 183 | Supposedly assigned to a pirate variant of Gimmick! |
| 184 | Sunsoft-1 on the Sunsoft-K PCB |
| 185 | CNROM with protection diodes |
| 186 | Originally assigned for the BIOS of the Fukutake Study Box |
| 187 | Kasheng A98402 and similar boards: MMC3 clone with an NROM-like PRG register |
| 188 | Board of Bandai’s Karaoke Studio |
| 189 | Unlicensed MMC3 games that bank PRG ROM in 32 KiB amounts, like AxROM, BNROM and GNROM |
| 190 | Magic Kid Googoo, an unlicensed game by Zemina |
| 191 | Board of Xianfeng Cartoon’s Chinese translation of Technos’ Sugoro Quest |
192 to 255
| Mapper | What it stands for |
|---|---|
| 192 | Waixing FS308: like TQROM, with 4 KB of CHR RAM alongside CHR ROM |
| 193 | Boards with NTDEC’s TC-112 mapper IC |
| 194 | Described from Disch’s original notes |
| 195 | Waixing FS303: an MMC3 clone and a GAL that can change which CHR banks are RAM |
| 196 | Boards by MRCM, who mostly made Mario-themed hacks |
| 197 | MMC3 clone wired for 512 KiB of CHR ROM by coarser CHR banking |
| 198 | Board of Xiangfeng Cartoon’s Chinese translation of a Capcom three-kingdoms game |
| 199 | Waixing FS309: a TNROM-compatible board with 32 KiB of battery-backed PRG RAM |
| 200 | Simple address-latch NROM-128 multicart boards |
| 201 | Multicart mapper for several NROM-256 games |
| 202 | The 150-in-1 pirate cart (implemented in BizHawk) |
| 203 | Multicart described from Disch’s original notes |
| 204 | Several pirate multicarts |
| 205 | Described from Disch’s original notes |
| 206 | DxROM, Namco 118, MIMIC-1: the simpler predecessor of MMC3, used by Tengen and Namco |
| 207 | Board of Fudou Myouou Den (Taito X1-005 with independent mirroring control) |
| 208 | Used by one known game, Street Fighter IV; MMC3-compatible registers for CHR |
| 209 | J.Y. Company ASIC |
| 210 | Namco 175 (submapper 1) and Namco 340 (submapper 2): Namco 163 with fewer features |
| 211 | J.Y. Company ASIC |
| 212 | A simple discrete-logic pirate multicart mapper, per FCEUX’s source |
| 213 | Duplicate of mapper 58 |
| 214 | Super Gun 20-in-1 pirate multicart |
| 215 | Later single-game and multicart releases from Sugar Softec |
| 216 | Certain Russian games, including Bonza and Videopoker Bonza |
| 217 | A 500-in-1 and a 2000-in-1 pirate multicart |
| 218 | The homebrew game Magic Floor |
| 219 | Kasheng A9461 MMC3-clone board |
| 220 | A debugging mapper assignment in FCEUX |
| 221 | Multicarts on the NTDEC N625092 PCB, with 8 KiB of unbanked CHR RAM |
| 222 | Reportedly pirate ports of Dragon Ninja (PCB CTC-31) and Don Doko Don |
| 223 | Appears to duplicate mapper 199 |
| 224 | Jncota KT-008 PCB |
| 225 | ET-4310 (60-pin) and K-1010 (72-pin) multicart boards |
| 226 | Multicart described from Disch’s original notes |
| 227 | Address-latch multicart board (PCB code 810449-C-A1 among others) |
| 228 | Board of Active Enterprises’ Action 52 and Cheetahmen II |
| 229 | BMC 31-IN-1: a simple mapper |
| 230 | Described from Disch’s original notes |
| 231 | Described from Disch’s original notes |
| 232 | Camerica/Codemasters Quattro multicarts |
| 233 | Described from Disch’s original notes |
| 234 | The Maxi 15 multicart |
| 235 | The “Golden Game” 150-in-1 (notes by The Mad Dumper, 29 October 2000) |
| 236 | Realtec 8031 and 8155 boards (128 KiB PRG ROM multicarts) |
| 237 | The Teletubbies 420-in-1 multicart |
| 238 | Contra Fighter, a hack of G.I. Joe with Street Fighter II characters |
| 239 | Unknown: the wiki’s grid links this number but the page does not exist |
| 240 | Described from Disch’s original notes |
| 241 | BxROM-like board with 8 KiB of bankable WRAM at $6000–$7FFF |
| 242 | Address-latch multicart board with 512 KiB PRG ROM plus 8 KiB unbanked CHR RAM |
| 243 | Sachen SA-020A |
| 244 | Decathlon by C&E |
| 245 | Waixing F003 |
| 246 | G0151-1 board, used only for a Taiwanese game, Fengshenbang: Fumo San Taizi |
| 247 | Unknown: the wiki’s grid links this number but the page does not exist |
| 248 | Mistakenly assigned to some Chinese games, for instance Bao Qing Tian |
| 249 | T9552: a chip on early Waixing boards that scrambles the order of PRG and CHR banks |
| 250 | A mapper by Nitra, used for pirate games such as Time Diver Avenger and Queen Bee V |
| 251 | Nestopia assignment that duplicates mapper 45 |
| 252 | Waixing’s Chinese localisation of Namcot’s Sangokushi: Chugen no Hasha |
| 253 | Waixing’s Chinese localisation of Bandai’s Dragon Ball Z: Kyoushuu! |
| 254 | Allocated for Pikachu Y2K (crypted ROMs), one of the pirate hacks of Felix the Cat |
| 255 | Apparently the 110-in-1 multicart |
Sources
- Mapper – NESdev Wiki: the grid of assigned numbers (read 2026-11-13); numbers 239 and 247 link to pages that do not exist
- List of mappers – NESdev Wiki: the common designations
- The introduction of each linked “INES Mapper nnn” wiki page, read through the wiki’s API on 2026-11-13; the rows are short paraphrases of those introductions, and say “described from Disch’s original notes” where the page opens with those notes instead of a description.