| Name | Description | Year | Manufacturer | Rom | Clone | Sample |
| innotab2 | InnoTAB 2 (UK) | 2011 | VTech | | | |
| innotv | InnoTV | 2015 | VTech | | | |
| input_buffer | Input Buffer | | | | | |
| inquiztr | Inquizitor (V1.2) | 1989 | BFM | | | |
| inquiztr11 | Inquizitor (V1.1) | 1989 | BFM | inquiztr | inquiztr | |
| inquiztr12a | Inquizitor (V1.2, alt) | 1989 | BFM | inquiztr | inquiztr | |
| ins8050 | National Semiconductor ISP-8A/500D SC/MP | | | | | |
| ins8060 | National Semiconductor INS 8060 SC/MP II | | | | | |
| ins8154 | INS8154 RAM I/O | | | | | |
| ins8250 | National Semiconductor INS8250 UART | | | | | |
| ins8900 | National Semiconductor INS8900 | | | | | |
| insector | Insector (prototype) | 1982 | Gottlieb | | | |
| insectx | Insector X (World) | 1989 | Taito Corporation Japan | | | |
| insectxbl | Insector X (bootleg) | 1990 | bootleg (Nagoya Kaihatsu) | insectx | insectx | |
| insectxj | Insector X (Japan) | 1989 | Taito Corporation | insectx | insectx | |
| instantm | Polaroid Instant Memories | 199? | Capcom / Polaroid | | | |
| instruct | Signetics Instructor 50 | 1978 | Signetics | | | |
| intact89 | InterAct Complete Video Game - 89-in-1 | 200? | Intec | | | |
| intchess | Intelligent Chess | 1980 | Intelligent Games / SciSys | | | |
| intcup94 | International Cup '94 (Ver 2.2O 1994/05/26) | 1994 | Taito Corporation Japan | | | |
| intel_28f010 | Intel 28F010 1024K (128K x 8) CMOS Flash Memory | | | | | |
| intel_28f016s5 | Intel 28F016S5 Flash | | | | | |
| intel_28f320j3d | Intel 28F320J3D Flash | | | | | |
| intel_28f320j5 | Intel 28F320J5 Flash | | | | | |
| intel_28f640j5 | Intel 28F640J5 Flash | | | | | |
| intel_e28f008sa | Intel E28F008SA Flash | | | | | |
| intel_e28f400b | Intel E28F400B Flash | | | | | |
| intel_te28f160 | Intel TE28F160 Flash | | | | | |
| intel_te28f320 | Intel TE28F320 Flash | | | | | |
| intel02 | Intellect-02 | 1985 | BREA Research Institute | | | |
| inteladv | Intelligence Advance E/R (Germany) | 2005 | VTech | | | |
| interact | Interact Family Computer | 1979 | Interact Electronics | | | |
| interpro_keyboard_port | InterPro Keyboard Port | | | | | |
| interpro_mouse | InterPro Mouse | | | | | |
| interpro_mouse_port | InterPro Mouse Port | | | | | |
| intervsn | Intervision 2001 | 198? | Intervision | ormatu | ormatu | |
| intg5410 | InterAct Complete Video Game - 111 Games & 42 Songs (G5410) | 200? | Intec | | | |
| inthunt | In The Hunt (World) | 1993 | Irem | | | |
| inthuntu | In The Hunt (US) | 1993 | Irem America | inthunt | inthunt | |
| intlaser | International Team Laser (prototype) | 1987 | Bally Midway | blasted | blasted | |
| intlc4_imm4_22 | Intel imm4-22 Instruction/Data Storage Module | | | | | |
| intlc4_imm4_90 | Intel imm4-90 High-Speed Paper Tape Reader | | | | | |
| intlc4_imm6_26 | Intel imm6-26 PROM Memory Module | | | | | |
| intlc44 | INTELLEC 4/MOD 4 | 1973? | Intel | | | |
| intlc440 | INTELLEC 4/MOD 40 | 1974? | Intel | | | |
| intlc4univbus | INTELLEC 4 Universal Bus | | | | | |
| intlc4univslot | INTELLEC 4 Universal Slot | | | | | |
| intlc8 | intellec 8 | 1973 | Intel | | | |
| intlc8m80 | intellec 8/Mod 80 | 1974 | Intel | | | |
| intmpt03 | Intelligent Game MPT-03 | 198? | Intelligent Game | | | |
| intrepid | Intrepid (set 1) | 1983 | Nova Games Ltd. | | | |
| intrepid2 | Intrepid (set 2) | 1983 | Nova Games Ltd. | intrepid | intrepid | |
| intrepidb | Intrepid (Elsys bootleg, set 1) | 1984 | bootleg (Elsys) | intrepid | intrepid | |
| intrepidb2 | Intrepid (Loris bootleg) | 1984 | bootleg (Loris) | intrepid | intrepid | |
| intrepidb3 | Intrepid (Elsys bootleg, set 2) | 1984 | bootleg (Elsys) | intrepid | intrepid | |
| intrgirl | Intergirl | 1995 | Barko | | | |
| intrgmes | Joker Card (Inter Games) | 1991 | Inter Games | | | |
| introdon | Karaoke Quiz Intro Don Don! (J 960213 V1.000) | 1996 | Sunsoft / Success | stvbios | | |
| intrscti | Intersecti | 19?? | <unknown> | | | |
| intruder | Intruder | 1980 | Konami (Game Plan license) | spcewarl | spcewarl | invaders |
| inttoote | International Toote (Germany, P523.V01) | 1998 | bootleg (Coinmaster) | jockeyc | jockeyc | |
| inttoote2 | International Toote II (v1.24, P387.V01) | 1993 | bootleg (Coinmaster) | jockeyc | jockeyc | |
| intv | Intellivision | 1979 | Mattel Electronics | | | |
| intv_cart_slot | Intellivision Cartridge Slot | | | | | |
| intv_control_port | Mattel Intellivision control port | | | | | |
| intv_ecs | Intellivision ECS Expansion | | | | | |
| intv_gfact | Intellivision Game Factory Cart | | | | | |
| intv_handctrl | Mattel Intellivision Hand Controller | | | | | |
| intv_ram | Intellivision Carts w/RAM | | | | | |
| intv_rom | Intellivision Standard Carts | | | | | |
| intv_voice | Intellivision Intellivoice Expansion | | | | | |
| intv_wsmlb | Intellivision World Series Baseball Cart | | | | | |
| intv2 | Intellivision II | 1982 | Mattel Electronics | intv | intv | |
| intvecs | Intellivision w/Entertainment Computer System + Intellivoice expansions | 1983 | Mattel Electronics | intv | intv | |
| intvecs_control_port | Mattel Intellivision ECS control port (HACK) | | | | | |
| intvecs_ctrls | Mattel Intellivision ECS Hand Controller x2 (HACK) | | | | | |
| intvecs_keybd | Mattel Intellivision ECS Keyboard | | | | | |
| intvecs_synth | Mattel Intellivision ECS Synthesizer | | | | | |
| intvkbd | Intellivision Keyboard Component (Unreleased) | 1981 | Mattel Electronics | intv | intv | |
| intvoice | Intellivision w/IntelliVoice expansion | 1982 | Mattel Electronics | intv | intv | |
| intvsrs | Super Video Arcade | 1981 | Sears | intv | intv | |
| inufuku | Quiz & Variety Sukusuku Inufuku (Japan) | 1998 | Video System Co. | | | |
| inunoos | Inu no Osanpo / Dog Walking (Japan, Export, Rev A) | 2001 | Wow Entertainment / Sega | naomi | | |
| invad2ct | Space Invaders II (Midway, cocktail) | 1980 | Midway | | | |
| invad2ct_audio | Midway Space Invaders II Audio | | | | | |
| invaddlx | Space Invaders Deluxe | 1980 | Taito (Midway license) | invadpt2 | invadpt2 | |
| invader4 | Space Invaders Part Four (bootleg of Space Attack II) | 1980 | bootleg | invaders | invaders | |
| invaderl | Space Invaders (Logitec) | 1978 | Taito / Logitec | invaders | invaders | |
| invadernc | Space Invaders (Nas Corp bootleg) | 1978 | bootleg (Nas Corp) | invaders | invaders | |
| invaders | Space Invaders / Space Invaders M | 1978 | Taito / Midway | | | |
| invaders_audio | Taito Space Invaders Audio | | | | | |
| invadersem | Space Invaders (Electromar, Spanish) | 19?? | Electromar | invaders | invaders | |
| invadpt2 | Space Invaders Part II (Taito, bigger ROMs) | 1979 | Taito | | | invaders |
| invadpt2a | Space Invaders Part II (Taito, smaller ROMs) | 1979 | Taito | invadpt2 | invadpt2 | invaders |
| invadpt2br | Space Invaders Part II (Brazil) | 1979 | Taito do Brasil | invadpt2 | invadpt2 | invaders |
| invadrmr | Space Invaders (Model Racing) | 1978 | Taito / Model Racing | invaders | invaders | |
| invasion | Invasion (Sidam) | 19?? | bootleg (Sidam) | invaders | invaders | |
| invasiona | UFO Robot Attack (bootleg of Invasion, newer set) | 1979 | bootleg | invaders | invaders | |
| invasiona2 | UFO Robot Attack (bootleg of Invasion, older set) | 1979 | bootleg | invaders | invaders | |
| invasionb | Invasion (Italian bootleg) | 1979 | bootleg | invaders | invaders | |
| invasionrz | Invasion (bootleg set 1, R Z SRL Bologna) | 1979 | bootleg (R Z SRL Bologna) | invaders | invaders | |
| invasionrza | Invasion (bootleg set 2, R Z SRL Bologna) | 1979 | bootleg (R Z SRL Bologna) | invaders | invaders | |
| invasnab | Invasion - The Abductors (version 5.0) | 1999 | Midway | | | |
| invasnab3 | Invasion - The Abductors (version 3.0) | 1999 | Midway | invasnab | invasnab | |
| invasnab4 | Invasion - The Abductors (version 4.0) | 1999 | Midway | invasnab | invasnab | |
| invcarht | Invinco / Car Hunt (Germany) | 1979 | Sega | | | |
| invds | Invinco / Deep Scan | 1979 | Sega | | | invinco |
| inves | Inves Spectrum 48K+ | 1986 | Investronica | spectrum | spectrum | |
| invho2 | Invinco / Head On 2 (set 1) | 1979 | Sega | | | invinco |
| invho2a | Invinco / Head On 2 (set 2) | 1979 | Sega | invho2 | invho2 | invinco |
| invinco | Invinco | 1979 | Sega | | | invinco |
| invmulti | Space Invaders Multigame (M8.03D) | 2002 | hack (Braze Technologies) | | | |
| invmultim1a | Space Invaders Multigame (M8.01A) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultim2a | Space Invaders Multigame (M8.02A) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultim2c | Space Invaders Multigame (M8.02C) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultim3a | Space Invaders Multigame (M8.03A) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultip | Space Invaders Multigame (prototype) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultis1a | Space Invaders Multigame (S0.81A) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultis2a | Space Invaders Multigame (S0.82A) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultis3a | Space Invaders Multigame (S0.83A) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invmultit3d | Space Invaders Multigame (T8.03D) | 2002 | hack (Braze Technologies) | invmulti | invmulti | |
| invqix | Space Invaders / Qix Silver Anniversary Edition (Ver. 2.03) | 2003 | Taito / Namco | | | |
| invrvnge | Invader's Revenge (set 1) | 1980? | Zenitone-Microsec Ltd. | | | |
| invrvngea | Invader's Revenge (set 2) | 1980? | Zenitone-Microsec Ltd. | invrvnge | invrvnge | |
| invrvngeb | Invader's Revenge (set 3) | 1980? | Zenitone-Microsec Ltd. | invrvnge | invrvnge | |
| invrvngedu | Invader's Revenge (Dutchford, single PCB) | 1980? | Zenitone-Microsec Ltd. (Dutchford license) | invrvnge | invrvnge | |
| invrvngegw | Invader's Revenge (Game World, single PCB) | 1980? | Zenitone-Microsec Ltd. (Game World license) | invrvnge | invrvnge | |
| inwinner | Instant Winner (Russian) | 1998 | WMS | | | |
| inwinners | Instant Winner (Spanish) | 1998 | WMS | inwinner | inwinner | |
| inyourfa | In Your Face (North America, prototype) | 1991 | Jaleco | | | |
| io992_24 | TI-99/2 I/O controller 24K version | | | | | |
| io992_32 | TI-99/2 I/O controller 32K version | | | | | |
| ioc | Acorn IOC | | | | | |
| ioc2f | SGI IOC2 (Full House) | | | | | |
| ioc2g | SGI IOC2 (Guinness) | | | | | |
| ioga_e | I/O Gate Array (Emerald) | | | | | |
| ioga_s | I/O Gate Array (Sapphire) | | | | | |
| ioga_t | I/O Gate Array (Turquoise) | | | | | |
| iomoon | Io Moon | 1994 | Sleic | | | genpin |
| iopcdvd | PlayStation 2 disc controller | | | | | |
| iopdma | PlayStation 2 IOP DMAC | | | | | |
| iopintc | PlayStation 2 IOP INTC | | | | | |
| iopsio2 | PlayStation 2 IOP SIO2 | | | | | |
| iopspu | PlayStation 2 IOP SPU | | | | | |
| ioptimer | PlayStation 2 IOP timer | | | | | |
| iosb | Apple IOSB I/O ASIC | | | | | |
| iowapp | Iowa Premium Player (2131-21, U5-1) | 1990 | Merit | | | |
| iox_hle | Seta IOX HLE | | | | | |
| ip2000 | InterPro/InterServe 20x0 | 1990 | Intergraph | | | |
| ip2400 | InterPro/InterServe 24x0 | 1992 | Intergraph | | | |
| ip2500 | InterPro/InterServe 25x0 | 1993 | Intergraph | | | |
| ip2700 | InterPro/InterServe 27x0 | 1993 | Intergraph | | | |
| ip2800 | InterPro/InterServe 28x0 | 1994 | Intergraph | | | |
| ip6000 | InterPro/InterServe 60x0 | 1990 | Intergraph | | | |
| ip6400 | InterPro/InterServe 64x0 | 1992 | Intergraph | | | |
| ip6700 | InterPro/InterServe 67x0 | 1993 | Intergraph | | | |
| ip6800 | InterPro/InterServe 68x0 | 1993 | Intergraph | | | |
| ipb | iPB | 19?? | Intel | | | |
| ipc | iPC | 19?? | Intel | ipb | ipb | |
| ipds | iPDS | 1982 | Intel | | | |
| iphone2g | iPhone (A1203) | 2007 | Apple | | | |
| iphone2g_spi | iPhone 2G SPI controller | | | | | |
| iphone2g_timer | iPhone 2G timers | | | | | |
| ipminvad | IPM Invader (set 1) | 1979 | IPM | | | ipminvad |
| ipminvad1 | IPM Invader (set 2) | 1979 | IPM | ipminvad | ipminvad | ipminvad |
| ippatsu | Ippatsu Gyakuten (Japan) | 1986 | Public Software / Paradais | | | |
| ippo2 | Hard Puncher Hajime no Ippo 2 - The Fighting! - Ouja e no chousen (VER.2.00J) | 2002 | Taito | | | |
| ipt_merge_all_hi | Input Merger (all high) | | | | | |
| ipt_merge_all_lo | Input Merger (all low) | | | | | |
| ipt_merge_any_hi | Input Merger (any high) | | | | | |
| ipt_merge_any_lo | Input Merger (any low) | | | | | |
| iq128 | Genius IQ 128 (Germany) | 1997 | Video Technology | pcunlim | pcunlim | |
| iq128_fr | Genius IQ 128 (France) | 1997 | Video Technology | pcunlim | pcunlim | |
| iq151 | IQ-151 | 198? | ZPA Novy Bor | | | |
| iq151_amos1 | IQ151 AMOS cart 1 | | | | | |
| iq151_amos2 | IQ151 AMOS cart 2 | | | | | |
| iq151_amos3 | IQ151 AMOS cart 3 | | | | | |
| iq151_basic6 | IQ151 BASIC6 | | | | | |
| iq151_basicg | IQ151 BASICG | | | | | |
| iq151_disc2 | IQ151 Disc2 | | | | | |
| iq151_grafik | IQ151 grafik | | | | | |
| iq151_minigraf | IQ151 Minigraf | | | | | |
| iq151_ms15a | IQ151 MS151A XY plotter | | | | | |
| iq151_staper | IQ151 STAPER | | | | | |
| iq151_video32 | IQ151 video32 | | | | | |
| iq151_video64 | IQ151 video64 | | | | | |
| iq151cart_slot | IQ151 cartridge slot | | | | | |
| iq501 | IQ-501 | 1992 | Micro Genius | | | |
| iq502 | IQ-502 | 1992 | Micro Genius | | | |
| iq7000 | IQ-7000 | 1988 | Sharp | | | |
| iqblock | IQ-Block (V100U) | 1993 | IGS | | | |
| iqblocka | Shuzi Leyuan (China, V127M, gambling) | 1996 | IGS | iqblock | iqblock | |
| iqblockf | IQ Block (V113FR, gambling) | 1997 | IGS | iqblock | iqblock | |
| iqpipe | IQ Pipe | 1991 | AMT | | | |
| iqtv512 | Genius IQ TV 512 (Germany) | 1998 | Video Technology | pcunlim | pcunlim | |
| iquest | IQuest 4.0 (US) | 2004 | LeapFrog | | | |
| iqunlim | IQ Unlimited | 1995 | VTech / Integrated Systems Inc. | | | |
| iqunlimgr | IQ Unlimited (Germany) | 1995 | VTech / Integrated Systems Inc. | iqunlim | iqunlim | |
| iqunlimz | IQ Unlimited (Z80) | 1991 | Video Technology | | | |
| irem_m37b_audio | Irem M-37B audio | | | | | |
| irem_m37b_ue17b_audio | Irem M-37B/UE-17B audio/voice | | | | | |
| iremga20 | Irem GA20 | | | | | |
| irion | Irion | 1983 | bootleg | exerion | exerion | |
| iris3130 | IRIS 3130 (IP2) | 1985 | Silicon Graphics Inc | | | |
| irisha | Irisha | 1983 | MGU | | | |
| irobot | I, Robot | 1983 | Atari | | | |
| iron | Iron (SNES bootleg) | 1996 | bootleg | | | |
| ironball | Iron Balls | 1987 | Stargame | | | genpin |
| ironclad | Choutetsu Brikin'ger / Iron Clad (prototype) | 1996 | Saurus | neogeo | | |
| ironclado | Choutetsu Brikin'ger / Iron Clad (prototype, bootleg) | 1996 | bootleg | ironclad | ironclad | |
| ironfort | Iron Fortress | 1998 | Eolith | | | |
| ironfortc | Gongtit Jiucoi Iron Fortress (Hong Kong) | 1998 | Eolith (Excellent Competence Ltd. license) | ironfort | ironfort | |
| ironhors | Iron Horse (version K) | 1986 | Konami | | | |
| ironhorsh | Iron Horse (version H) | 1986 | Konami | ironhors | ironhors | |
| ironmaid | Iron Maiden | 1981 | Stern | | | genpin |
| irrmaze | The Irritating Maze / Ultra Denryu Iraira Bou | 1997 | SNK / Saurus | neogeo | | |
| is482 | IS-482 Workstation | 199? | Decision Data | | | |
| isa_adlib | Ad Lib Sound Card | | | | | |
| isa_aga | AGA | | | | | |
| isa_aga_pc200 | AGA PC200 | | | | | |
| isa_bblue2 | Microlog Baby Blue II CPU Plus | | | | | |
| isa_chessmdr | The ChessMachine DR | | | | | |
| isa_chessmsr | The ChessMachine SR | | | | | |
| isa_com | Communications Adapter PC/XT | | | | | |
| isa_com_at | Communications Adapter | | | | | |
| isa_epc_mda | Ericsson PC Monochrome HR Graphics Board 1070 | | | | | |
| isa_finalchs | The Final ChessCard | | | | | |
| isa_gblaster | Game Blaster Sound Card | | | | | |
| isa_gus | Gravis Ultrasound | | | | | |
| isa_hdc | Fixed Disk Controller Card | | | | | |
| isa_hdc_ec1841 | EC1841 HDC Card | | | | | |
| isa_hercules | Hercules Graphics Card | | | | | |
| isa_ibm_mda | IBM Monochrome Display and Printer Adapter | | | | | |
| isa_ibm_pgc | IBM Professional Graphics Controller | | | | | |
| isa_ibm_speech | IBM PS/2 Speech Adapter | | | | | |
| isa_ide | IDE Fixed Drive Adapter | | | | | |
| isa_lpt | Printer Adapter | | | | | |
| isa_mpu401 | Roland MPU-401 MIDI Interface (ISA) | | | | | |
| isa_pcmidi | Music Quest PC MIDI Card (IHQMQ9) | | | | | |
| isa_pds | Programmers Development System (host) | | | | | |
| isa_prose4001 | Speech Plus Prose 4001 (IBM PC mode) | | | | | |
| isa_sblaster_16 | Sound Blaster 16 | | | | | |
| isa_sblaster1_0 | Sound Blaster 1.0 | | | | | |
| isa_sblaster1_5 | Sound Blaster 1.5 | | | | | |
| isa16 | 16-bit ISA bus | | | | | |
| isa16_oksan_lpc | ISA16 Oksan Virtual LPC | | | | | |
| isa16_oksan_rom_disk | ISA16 Oksan ROM DISK for MK-III | | | | | |
| isa16_p5txla_mb | ISA16 P5TX-LA Virtual MB resources | | | | | |
| isa16_piu10 | ISA16 PIU10 for MK-III | | | | | |
| isa16_pumpitup_io_sound | ISA16 Pump It Up I/O & Sound board | | | | | |