| MAME Name | Description | Official | Alternate | VC WS | ||
 | wacko | Wacko | 2.22 MB 06-Aug-2022 Download | - | 7.49 MB 06-Aug-2022 Download | |
 | wakuwak7 | Waku Waku 7 | 668 kB 06-Aug-2022 Download | - | 3.99 MB 06-Aug-2022 Download | |
 | wallc | Wall Crash (set 1) | - | - | 185 kB 06-Aug-2022 Download | |
| wallst | Wall Street | - | - | 472 kB 06-Aug-2022 Download | |
 | wamazon | Wild Amazon (0200507V, NSW/ACT) | - | 624 kB 06-Aug-2022 Download | - | |
 | wamazona | Wild Amazon (0200285V, NSW/ACT) | - | 624 kB 06-Aug-2022 Download | - | |
| wanted | Wanted | - | - | 401 kB 06-Aug-2022 Download | |
| wardner | Wardner (World) | - | - | 278 kB 06-Aug-2022 Download | |
| warfa | War: Final Assault (EPROM 1.9 Mar 25 1999, GUTS 1.3 Apr 20 1999, GAME Apr 20 1999) | - | - | 483 kB 19-May-2023 Download | |
| wargods | War Gods (HD 10/09/1996 - Dual Resolution) | - | - | 166 kB 06-Aug-2022 Download | |
 | warlords | Warlords | 3.81 MB 06-Aug-2022 Download | - | 2.32 MB 06-Aug-2022 Download | |
 | warofbug | War of the Bugs or Monsterous Manouvers in a Mushroom Maze | 1.22 MB 06-Aug-2022 Download | - | 1.40 MB 19-May-2023 Download | |
| warp1 | Warp-1 (Japan) | - | - | 430 kB 19-May-2023 Download | |
 | warpsped | Warp Speed (prototype) | 1.25 MB 06-Aug-2022 Download | - | - | |
 | warpwarp | Warp & Warp | 56.0 kB 06-Aug-2022 Download | - | 236 kB 06-Aug-2022 Download | |
 | warpwarpr | Warp Warp (Rock-Ola set 1) | - | - | 233 kB 06-Aug-2022 Download | |
 | warrior | Warrior | 1.83 MB 06-Aug-2022 Download | - | 1.63 MB 06-Aug-2022 Download | |
 | warriorb | Warrior Blade - Rastan Saga Episode III (Japan) | - | - | 10.5 MB 06-Aug-2022 Download | |
 | warzard | Warzard (Japan 961121) | - | - | 10.7 MB 06-Aug-2022 Download | |
| waterski | Water Ski | - | - | 379 kB 06-Aug-2022 Download | |
| watrball | Water Balls | - | - | 148 kB 06-Aug-2022 Download | |
 | wb3 | Wonder Boy III - Monster Lair (set 6, World, System 16B) (8751 317-0098) | - | - | 1.01 MB 19-May-2023 Download | |
| wbbc97 | Beach Festival World Championship 1997 | - | - | 125 kB 06-Aug-2022 Download | |
| wbeachvl | World Beach Volley (set 1, PIC16C57 audio CPU) | - | - | 194 kB 06-Aug-2022 Download | |
| wbml | Wonder Boy - Monster Land (Japan New Ver., MC-8123, 317-0043) | - | - | 120 kB 06-Aug-2022 Download | |
 | wboy | Wonder Boy (set 1, 315-5177) | 1.24 MB 06-Aug-2022 Download | - | 857 kB 19-May-2023 Download | |
 | wcbowl | World Class Bowling (v1.66) | - | - | 630 kB 06-Aug-2022 Download | |
 | wcbowldx | World Class Bowling Deluxe (v2.00) | - | - | 2.41 MB 06-Aug-2022 Download | |
 | wcougar | Wild Cougar (0100167V, NSW/ACT) | - | 625 kB 06-Aug-2022 Download | - | |
| wcvol95 | World Cup Volley '95 (Asia v1.0) | - | - | 113 kB 06-Aug-2022 Download | |
| wecleman | WEC Le Mans 24 (v2.01) | - | - | 190 kB 06-Aug-2022 Download | |
| welltris | Welltris (World?, 2 players) | - | - | 177 kB 06-Aug-2022 Download | |
 | wfortune | Wheel Of Fortune (set 1) | 1.53 MB 06-Aug-2022 Download | - | 362 kB 06-Aug-2022 Download | |
 | wg3dh | Wayne Gretzky's 3D Hockey (ver 1.3) | - | - | 736 kB 06-Aug-2022 Download | |
| wgp | World Grand Prix (World) | - | - | 217 kB 06-Aug-2022 Download | |
| wgp2 | World Grand Prix 2 (Japan) | - | - | 242 kB 06-Aug-2022 Download | |
 | wh1 | World Heroes (ALM-005) | 700 kB 06-Aug-2022 Download | - | 8.02 MB 06-Aug-2022 Download | |
 | wh2 | World Heroes 2 (ALM-006 ~ ALH-006) | 694 kB 06-Aug-2022 Download | - | 9.53 MB 06-Aug-2022 Download | |
 | wh2j | World Heroes 2 Jet (ADM-007 ~ ADH-007) | 783 kB 06-Aug-2022 Download | - | 8.79 MB 06-Aug-2022 Download | |
| wheelrun | Wheels Runner | - | - | 211 kB 06-Aug-2022 Download | |
| whizz | Whizz | - | - | 176 kB 06-Aug-2022 Download | |
| whodunit | Who Dunit (version 9.0) | - | - | 216 kB 19-May-2023 Download | |
| whoopee | Pipi & Bibis / Whoopee!! (Teki Paki hardware) | - | - | 109 kB 06-Aug-2022 Download | |
 | whp | World Heroes Perfect | - | - | 8.68 MB 06-Aug-2022 Download | |
| wiggie | Wiggie Waggie | - | - | 615 kB 06-Aug-2022 Download | |
 | wildbill | Wild Bill (0100297V, NSW/ACT) | - | 626 kB 06-Aug-2022 Download | - | |
 | wildfang | Wild Fang / Tecmo Knight (World?) | 17.2 MB 06-Aug-2022 Download | - | 270 kB 06-Aug-2022 Download | |
 | wildfire | Wildfire (patent) | 601 kB 06-Aug-2022 Download | - | - | |
 | wildone | Wild One (4VXEC5357, New Zealand) | 603 kB 06-Aug-2022 Download | - | - | |
| wildplt | Wild Pilot | - | - | 133 kB 06-Aug-2022 Download | |
 | willow | Willow (World) | 6.09 MB 06-Aug-2022 Download | - | 17.4 MB 06-Aug-2022 Download | |
 | wilytowr | Wily Tower | - | - | 2.52 MB 06-Aug-2022 Download | |
 | windheat | Winding Heat (EAA, Euro v2.11) | - | - | 638 kB 06-Aug-2022 Download | |
 | wingwar | Wing War (World) | - | - | 179 kB 06-Aug-2022 Download | |
 | winrun | Winning Run (World) (89/06/06, Ver.09) | - | - | 281 kB 06-Aug-2022 Download | |
 | winrun91 | Winning Run '91 (Japan) (1991/03/05, Main Ver 1.0, Sub Ver 1.0) | - | - | 281 kB 06-Aug-2022 Download | |
 | winrungp | Winning Run Suzuka Grand Prix (Japan) (89/12/03, Ver.02) | - | - | 276 kB 06-Aug-2022 Download | |
| winterht | Winter Heat (JUET 971012 V1.000) | - | - | 222 kB 06-Aug-2022 Download | |
 | wiping | Wiping | - | - | 1.65 MB 06-Aug-2022 Download | |
| wiseguy | Wise Guy | - | - | 37.6 kB 06-Aug-2022 Download | |
| witch | Witch | - | - | 123 kB 06-Aug-2022 Download | |
 | witchcrd | Witch Card (Video Klein CPU box, set 1) | 600 kB 06-Aug-2022 Download | - | - | |
 | witchgme | Witch Game (Video Klein, set 1) | 600 kB 06-Aug-2022 Download | - | - | |
 | witchjol | Jolli Witch (Export, 6T/12T ver 1.57D) | 600 kB 06-Aug-2022 Download | - | - | |
 | witchryl | Witch Royal (Export version 2.1) | - | 595 kB 06-Aug-2022 Download | - | |
| wits | Wit's (Japan) | - | - | 192 kB 06-Aug-2022 Download | |
 | wiz | Wiz | - | - | 2.58 MB 06-Aug-2022 Download | |
 | wizatron | Wiz-A-Tron | 9.31 MB 06-Aug-2022 Download | - | - | |
 | wizdfire | Wizard Fire (Over Sea v2.1) | - | - | 3.20 MB 06-Aug-2022 Download | |
| wizwarz | Wiz Warz (prototype) | - | - | 72.0 kB 06-Aug-2022 Download | |
| wizzquiz | Wizz Quiz (Konami version) | - | - | 328 kB 19-May-2023 Download | |
 | wjammers | Windjammers / Flying Power Disc | 683 kB 06-Aug-2022 Download | - | 4.39 MB 06-Aug-2022 Download | |
 | wldangel | Wild Angels (0100337V, NSW/ACT) | 625 kB 06-Aug-2022 Download | - | - | |
| wldcourt | Pro Tennis World Court (Japan) | - | - | 213 kB 06-Aug-2022 Download | |
 | wldwitch | Wild Witch (Export, 6T/12T ver 1.84A) | 600 kB 06-Aug-2022 Download | - | - | |
| wlstar | Wonder League Star - Sok-Magicball Fighting (Korea) | - | - | 285 kB 06-Aug-2022 Download | |
 | wmatch | Water Match (315-5064) | 80.9 kB 06-Aug-2022 Download | - | 942 kB 19-May-2023 Download | |
 | wmg | Williams Multigame | 1.13 MB 06-Aug-2022 Download | - | 446 kB 19-May-2023 Download | |
 | wndrmomo | Wonder Momo | - | - | 1.24 MB 06-Aug-2022 Download | |
| wndrplnt | Wonder Planet (Japan) | - | - | 254 kB 06-Aug-2022 Download | |
| wof | Warriors of Fate (World 921031) | - | - | 221 kB 06-Aug-2022 Download | |
| wofa | Sangokushi II (Asia 921005) | - | - | 206 kB 06-Aug-2022 Download | |
| wofch | Tenchi wo Kurau II: Sekiheki no Tatakai (CPS Changer, Japan 921031) | - | - | 377 kB 06-Aug-2022 Download | |
| wolfpack | Wolf Pack (prototype) | - | - | 200 kB 06-Aug-2022 Download | |
| wondl96 | Wonder League '96 (Korea) | - | - | 256 kB 06-Aug-2022 Download | |
 | wondstck | Wonder Stick (set 1) | - | - | 316 kB 06-Aug-2022 Download | |
 | woodpeck | Woodpecker (set 1) | - | - | 293 kB 06-Aug-2022 Download | |
| worldwar | World Wars (World?) | - | - | 447 kB 06-Aug-2022 Download | |
 | wotw | War of the Worlds | 1.85 MB 06-Aug-2022 Download | - | 130 kB 06-Aug-2022 Download | |
 | wow | Wizard of Wor | 2.79 MB 06-Aug-2022 Download | - | 1.27 MB 06-Aug-2022 Download | |
 | wownfant | WOW New Fantasia (Explicit) | - | - | 313 kB 06-Aug-2022 Download | |
| wpksocv2 | World PK Soccer V2 (ver 1.1) | - | - | 124 kB 06-Aug-2022 Download | |
 | wrally | World Rally (Version 1.0, Checksum 0E56) | - | - | 294 kB 06-Aug-2022 Download | |
 | wrally2 | World Rally 2: Twin Racing (mask ROM version) | - | - | 239 kB 06-Aug-2022 Download | |
 | wrecking | Vs. Wrecking Crew | - | - | 147 kB 06-Aug-2022 Download | |
 | wrestwar | Wrestle War (set 3, World) (8751 317-0103) | 11.0 MB 06-Aug-2022 Download | - | 1.14 MB 06-Aug-2022 Download | |
 | wrofaero | War of Aero - Project MEIOU | - | - | 237 kB 06-Aug-2022 Download | |
 | ws | Pro Yakyuu World Stadium (Japan) | - | - | 242 kB 06-Aug-2022 Download | |
 | wschamp | Wing Shooting Championship V2.00 | - | - | 1.04 MB 06-Aug-2022 Download | |
 | wscolor | WonderSwan Color | 1.32 MB 06-Aug-2022 Download | - | - | |
 | wseries | World Series: The Season (rev 1) | - | - | 251 kB 06-Aug-2022 Download | |
 | wsf | World Soccer Finals (rev 4) | - | - | 56.4 kB 06-Aug-2022 Download | |
 | wstrike | Witch Strike (Export, 6T/12T ver 1.01A) | 600 kB 06-Aug-2022 Download | - | - | |
 | wswan | WonderSwan | 2.53 MB 06-Aug-2022 Download | - | - | |
 | wtchjack | Witch Jack (Export, 6T/12T ver 0.87-89) | 600 kB 06-Aug-2022 Download | - | - | |
 | wtennis | World Tennis | - | - | 43.2 kB 06-Aug-2022 Download | |
 | wtigernz | White Tiger (3VXFC5342, New Zealand) | 603 kB 06-Aug-2022 Download | - | 340 kB 06-Aug-2022 Download | |
 | wtrnymph | Water-Nymph (Ver. 1.4) | - | - | 207 kB 06-Aug-2022 Download | |
 | wupndown | Witch Up & Down (Export, 6T/12T ver 1.02) | 600 kB 06-Aug-2022 Download | - | - | |
 | wwallyj | Wally wo Sagase! (rev B, Japan, 2 players) (FD1094 317-0197B) | - | - | 136 kB 06-Aug-2022 Download | |
 | wwestern | Wild Western (set 1) | 171 kB 06-Aug-2022 Download | - | 1.47 MB 06-Aug-2022 Download | |
 | wwfmania | WWF: Wrestlemania (rev 1.30 08/10/95) | 13.4 MB 06-Aug-2022 Download | - | 2.14 MB 06-Aug-2022 Download | |
 | wwfsstar | WWF Superstars (Europe) | 9.13 MB 06-Aug-2022 Download | - | 236 kB 06-Aug-2022 Download | |
 | wwfwfest | WWF WrestleFest (World) | - | - | 249 kB 06-Aug-2022 Download | |
 | wwjgtin | Wai Wai Jockey Gate-In! | - | - | 246 kB 06-Aug-2022 Download | |
 | wyvernf0 | Wyvern F-0 (Rev 1) | - | - | 446 kB 06-Aug-2022 Download | |
 | wyvernwg | Wyvern Wings (set 1) | - | - | 231 kB 06-Aug-2022 Download | |
