WAcrobat Mission is a vertically scrolling shoot 'em up arcade game released by UPL in 1991, licensed to Taito for manufacture and distribution. It was ported to Super Famicom in 1992.
WArk Area is a multidirectional scrolling shooter released in arcades by UPL in 1987. The player uses futuristic spacecraft to shoot enemies, collect power-ups, and defeat bosses while advancing through 23 levels. It is the sequel to the arcade game Nova 2001, which was released by Universal in the USA.
WAtomic Robo-Kid (アトミック・ロボキッド) is a horizontally scrolling shooter released in arcades by UPL in 1988. In the US, the game was published by Nikom. The PC Engine version is an adaptation of the arcade original and published as Atomic Robo-Kid Special.
WBio-ship Paladin, known in Japan as Space Battleship Gomora , is a 1990 horizontally scrolling shoot 'em up arcade game. It was later ported to the Sega Mega Drive. While the game is essentially a standard horizontally scrolling shoot 'em up, it has an innovation that makes it unique in the genre. The player flies a spaceship which has the standard forward guns to be found in all horizontal scrollers, but it also possesses a weapon that can be manually targeted with a crosshair, in the same manner as in the game Missile Command. This allows the player to fire in any direction with pinpoint accuracy, and adds an extra level of strategy to the game. The game saw an almost arcade perfect port on the Sega Mega Drive. What few changes there were actually enhanced the look of the game such as added parallax scrolling backgrounds in level 2. It would eventually see a re-release after quite some time as part of the Arcade Archives series for Nintendo Switch and PlayStation 4 on August 5th, 2021 worldwide.
WKoutetsu Yousai Strahl is a horizontal scrolling Shoot 'em up developed by UPL in 1992.
WNinja Taro, released in Japan as Sengoku Ninja-kun (戦国忍者くん), is an action-adventure video game for the Game Boy by NMK. It was released in 1991 in both Japan by UPL and North America by American Sammy and it is part of the Ninja Jajamaru-kun series.
WNinja-kun: Adventure of Devil Castle is the first video game in the Ninja-kun series. It was released for arcades, on the Famicom, and MSX by Jaleco in 1984. The MSX version was the only version released outside of Japan, as it was released in Europe under the name "Ninja".
WOmega Fighter is a vertical scrolling shooter developed for the arcades by UPL and released in 1989. While similar to most other scrolling shooters, Omega Fighter was unique in its gameplay, level and enemy focus: rather than flying over multiple levels, the player faced up against an enormous space battle cruiser which contained every level. A Sega Genesis version was planned but never released.
WPenguin Wars is an arcade game released in 1985 by UPL. It was ported to the original Game Boy (1990), MSX and Nintendo Entertainment System by ASCII under the title Penguin Wars. The Game Boy version of the game is known as King of the Zoo in Europe and Penguin-Kun Wars Vs. in Japan. The main background music in most versions of the game is an electronic rendition of "Motto Sekkin Shimasho" a song originally performed by 1980s J-Pop singer Hidemi Ishikawa .
WUSAAF Mustang is a horizontally scrolling shooter arcade game originally developed by NMK, and published by UPL in 1990. It was ported a year later to the Mega Drive by Taito, while being renamed Fire Mustang. NMK Co. Ltd. also developed the Mega Drive version.