| Ultimate Ecology | 1993 | arcade |
| Ultra X Weapons / Ultra Keibitai | 1995 | arcade |
| Under Defeat | 2005 | arcade, dreamcast |
| Under Defeat HD | 2012 | ps3, xbox360 |
| Under Defeat HD - Deluxe Edition | | xbox360 |
| Us vs. Them | 1984 | arcade |
| Uzu Keobukseon | 1992 | genesis |
| V-Five | 1993 | arcade |
| VS. Star Luster | 1985 | arcade |
| VS. Top Gun | 1987 | arcade |
| Vanguard | 1981 | arcade |
| Vapor Trail - Hyper Offence Formation | 1989 | arcade |
| Varia Metal | 1995 | arcade |
| Varth: Operation Thunderstorm | 1992 | arcade |
| Vasara | 2000 | arcade |
| Vasara 2 | 2001 | arcade |
| Vasara Collection | 2019 | ps4, vita |
| Vasara HD Collection | 2019 | switch, xboxone |
| Vastar | 1983 | arcade |
| Vattle Giuce | 1991 | gb |
| Veigues - Tactical Gladiator | 1990 | pcengine |
| Velocity 2X | 2014 | ps4, switch, vita, xboxone |
| Velocity 2X - Critical Mass Edition | 2014 | vita |
| Velocity Ultra | 2013 | ps3, vita |
| Venus | 1983 | arcade |
| Vertical Force | 1995 | vb |
| Video Whizball | 1978 | channelf |
| Viewpoint | 1992 | arcade, genesis, neogeo, ps1 |
| Vimana | 1991 | arcade |
| Violent Soldier | 1990 | pcengine |
| Viper | 1988 | arcade |
| Viper Phase 1 | 1995 | arcade |
| Virtua Cop | 1994 | arcade, saturn |
| Void Vikings | 2019 | xboxone |
| Volguard II | 1985 | nes |
| Vs. Raid on Bungeling Bay | 1985 | arcade |
| Vs. Super SkyKid | 1985 | arcade |
| Vs. Super Xevious | 1986 | arcade |
| Vulcan Venture | 1988 | arcade, nes, pcengine |
| Vulgus | 1984 | arcade |
| W Ring - The Double Rings | 1990 | pcengine |
| Waifu Uncovered | 2020 | switch |
| Wall Break | 1983 | a2600 |
| War Mission | 1987 | arcade |
| War in the Gulf | 1991 | nes |
| War of Aero - Project MEIOU | 1993 | arcade |
| WarTech - Senko no Ronde | 2006 | xbox360 |
| Warhammer 40.000 - Kill Team | 2011 | ps3 |
| Waterworld | 1995 | vb |
| Weilai Xiaozi - Joy Van Kid | | nes |
| Whizz | 1989 | arcade |
| Wild Guns | 2014 | wiiu |
| The Wild West | 2007 | nds |
| Wild Western | 1982 | arcade |
| Winds of Thunder | 1993 | pcengine |
| Wing Force | 1993 | arcade |
| Wing War | 1994 | arcade |
| Wing War R360 | 1994 | arcade |
| Wing Warriors | | gbc |
| Wivern Wings | 2001 | arcade |
| Wolflame | 2021 | dreamcast |
| Wonder Planet | 1987 | arcade |
| Wonsido 1930's | 1989 | arcade |
| World End | 1983 | a2600 |
| World Invader | | arcade |
| World Reborn | 2015 | gba |
| World Wars | 1987 | arcade |
| Wyvern F-0 | 1985 | arcade |
| Wyvern Wings | 2001 | arcade |
| X Multiply | 1989 | arcade |
| X Tom 3D | 1999 | arcade |
| X-Plan | 2006 | arcade |
| X2222 | 2000 | arcade |
| XDR - X-Dazedly-Ray | 1990 | genesis |
| XII Stag | 2002 | arcade, ps2 |
| XType Plus | 2014 | wiiu |
| XX Mission | 1986 | arcade |
| XenoRaptor | 2019 | ps4, xboxone |
| Xenon | 1988 | arcade |
| Xenon 2 | 1992 | gb |
| Xenon 2 - Megablast | 1992 | gb |
| Xenon 2 - Megablast | 1991 | genesis, sms |
| Xenoraid | 2016 | ps4, vita, xboxone |
| Xevios | 1982 | arcade |
| Xevious | 1982 | a7800, arcade, fds, nes |
| Xevious - Fardraut Densetsu | 1990 | pcengine |
| Xevious - The Avenger | 1988 | nes |
| Xexex | 1991 | arcade |
| Xiao Monu - Magic Girl | 1993 | genesis |
| Xyanide | 2006 | xbox |
| Yamato | 1983 | arcade, sg1000 |
| Yars' Revenge | 1999 | gbc |
| Youma Ninpou Chou | 1986 | arcade |
| Yurukill: The Calumniation Games | 2022 | ps4, switch |
| ZAS | 1992 | gb |
| ZPF | 2023 | genesis |
| Zaku | 2009 | lynx |
| Zanac | 1986 | fds, nes |
| Zarlor Mercenary | 1990 | lynx |
| Zaviga | 1984 | arcade |