The plot begins when narcotics agents Paul and Bobby are committed to putting an end to the drug syndicate known as "MID". MID's secret hideout is located on Riot Island, an island full of uninhabited ruins with people moved inside of it while turning it into a slum. Buildings include apartments, hospitals, factories and even a casino. During their heavy research on MID, they unexpectedly received a phone call from MID. When Paul heard the voice of his girlfriend Catherine crying for help on the phone while being hung up without explaining, he assumed she'd been abducted, making him and Bobby head toward Riot Island and save her.
Rad Mobile is a first person perspective racer and had the player engage into a non-stop road race across the USA while avoiding traffic and police cars under the time limit. The only player controlled car is a Ferrari 330 P4 type prototype racing against computer controlled opponents driving generic cars. The player would race with fifteen other rivals across the track, all attempting to prevent the player from winning. During some of the courses the player would have the opportunity to activate different controls, which include headlights for night driving and windshield wipers during rainstorms. If the player does not activate these controls when prompted, effects such as a restricted view of the road or a wet windshield will occur.
Turbo Force is even more of a direct predecessor to Sonic Wings than is Rabio Lepus: Turbo Force. The story is that an American Air Force pilot, while racing his car on a public road, wanders into another mysterious dimension and gets caught up in a war there.
Black Heart is a horizontally scrolling shoot 'em up arcade game released by UPL in 1991. The player controls a fire-breathing dragon and shoots enemies with fireballs, collects power-ups, and defeats bosses to advance levels.
Avenging Spirit, known in Japan as Phantasm, is a 1991 2-player platform arcade game developed by C.P. Brain and published by Jaleco. Players attack (or possess) enemies, collect power-ups, and defeat bosses to advance. Players can possess one of four characters with unique abilities at the start of the game, but the library of enemies expands and changes with each level.
Xexex is a 1991 side-scrolling shoot 'em up arcade game by Konami released in Japan. It draws on Irem's R-Type and Konami's other shoot 'em up Gradius, while adding the tentacle mechanics of Irem's other shoot 'em up XMultiply.
In the game, players pilot a ship called the Flintlock in order to save a blue haired princess named Irene of the planet E-Square from an evil lord named Klaus. Each stage is punctuated with a cutscene of the princess crying for help as she is tortured. In the ending, the Flintlock sends the orb back through the atmosphere of the planet, where it morphs into a naked fairy.
There are different gameplay mechanics between the original Japanese release and the overseas releases.
Spider-Man: The Video Game, also known as Spider-Man, is a 1991 arcade video game developed by Sega based on the Marvel Comics character Spider-Man.
Spider-Man and his allies must retrieve a mystical artefact first from the Kingpin, then Doctor Doom.
Ah Eikou no Koushien is an arcade baseball game which is played under normal baseball rules with the exception being that players can charge themselves up to attempt a better hit or pitch.
Choose among 4 martial arts masters, each with his own distinct killing blow.
Feel the excitement of real fighting as you fight to recover the secret scrolls and save the daughter of your slain master.
Defend the honor of the old master as only you can do.
Taking place in the year 2191, the player pilots a recently developed space fighter, the SR-91, through six stages to defend the Earth from a two-year-long alien invasion. The SR-91 uses the VAWS (Variable Armor and Weapon System) which uses the Optica Weapon Arms. The Arms shield the ship from top and bottom attacks, provides back-up fire and using its Arm System can be positioned to fire in various angles depending on the current weapon. The SR-91 uses one of three different pick-up weapons: the red "Taikuu Laser", thin red beams that fire straight forward; the yellow "Ring Laser", yellow rings which can be aimed in all directions and provide good coverage; and the blue "Hansha Ball", blue spheres that can be also aimed in all directions and bounce off the walls. The only other pick-up items are Speed Ups and Speed Downs. Extends were set at the first 70,000 points and was added with every 80,000.
Side scrolling action shooter. Shoot the aliens and rescue colonists from various planets. Defeat the alien mothership with the special weapons you collect.
A simple shoot-em-up with multiple endings based on your performance in each level. Your guns build up power and get stronger as you tap the fire button rapidly, but the power gauge will drain if you stop tapping the button. After charging up enough power, you can press the bomb button for a smart bomb attack which uses up the whole power gauge. With more power it creates a bigger explosion. Power-ups switch your weapon to fire different projectiles, like lasers that spread out at right angles, and a flamethrower that reaches farther with more power.
Strato Fighter, otherwise known as Raiga: Strato Fighter, is a 1991 video arcade game developed by Tecmo. It is a horizontal side-scrolling space shooter in which two players may play simultaneously. The game sets players in the year 2135 on a mission to save the Earth from colony-based, militant alien invaders using the MB-OG Raiga (Thunder Fang).
The Raiga has the ability to spin around to attack enemies from behind. Power-ups can be obtained by destroying container ships. The craft's weapons include the Shotgun, Ion launcher, Vertical, Homing Missiles and Bomb attacks along with items such as Speed Ups, Shields and Extends. The spacecraft can also obtain an Option weapon called the Auto Guard; three types of Auto Guards were available such as the target locking Beam Rifle, the powerful Solid Shooter and the standard Blaster item.
Pollux is a vertical scrolling shooter arcade game. It was developed by Dooyong and published by Atlus, released only in Asian arcades in 1991.
As a part of mankind’s future space development project, an enormous, automated space station called Pollux is developed. Pollux is equipped with an artificial brain that acquires so much intelligence that it makes its own personality, gender and exceeds the minds of its creators. However, Pollux starts to dwell on the thought of evil so much that it starts attacking those it was supposed to service. The player assumes control of a space fighter pilot assigned to destroy Pollux before it takes any more lives.
Hammer Away is an unreleased arcade shoot ’em up game for the System-18, which was being developed by Santos in partnership with SEGA in around 1990-1991. It was intended to be launched in ’91, but ultimately never made its way to arcades for unknown reasons.