Alien Soldier

Super Fantasy Zone is an entry in the Fantasy Zone series of games, and was initially released in 1992 for the Sega Mega Drive. Unlike previous outings, Super Fantasy Zone was handled entirely by Sunsoft (under license from Sega), who had previously brought Fantasy Zone and Fantasy Zone II to the Nintendo Famicom. For unknown reasons the game was not released in cartridge form in North America, but is currently unconfirmed as being a Sega Channel title. It eventually saw a more widespread release as part of the Wii's Virtual Console service.

Forgotten Worlds can be played by up to two players simultaneously. The player controls a flying muscle-bound soldier armed with a rifle with unlimited ammo. The Player 1 character is equipped with a long-range automatic rifle, while Player 2 has a short-range wide shot. The controls in the original coin-op version consists of an eight-way joystick for moving the character in the air while flying and a unique rotatable button known as the "roll switch".Rotating the switch left or right allows the player to adjust their character's aim in one of sixteen directions, while pressing it causes the player character to shoot his gun. This allows for the player to move their character anywhere while keeping their aim in one direction. Pressing the switch rapidly will cause the character to perform a "megacrush" attack will destroy all on-screen enemies, but at the expense of a portion of their vitality gauge. The player character is accompanied by a satellite module orbiting near him that will provide backup firepower every time the player fires their gun. Like the main character, the satellite can also be rotated with the roll switch. Rotating the character while firing will only rotate the aim of the satellite, while rotating the character without firing will not only rotate the satellite's aim, it will also move its relative position around the player. The player can obtain blue-colored coins known as "zennies" from defeating enemies throughout the game. The zennies are used as currency to obtain new power-up items from shops located at certain points in each stage. When the player enters an item shop, they are given a choice of the items available and a limited time to make any purchase they wish. These items consists primarily of new weapons for the satellite module, but also includes a health kit to restore lost vitality, an armor that allows the player to sustain additional damage, and even tips on how to defeat the boss awaiting at the end of the current stage. Forgotten Worlds consists of five stages with a total of eight bosses. The player will lose if their vitality gauge runs out, but will be given a chance to continue.

Pulseman is a platform game only released on cartridge for a Japanese audience, but was available to North American consumers via the Sega Channel. The game was not sold in Europe. It was developed by Game Freak, the development team that would later go on to produce the Pokémon series of games for Nintendo. Many of Pulseman's staff, including director Ken Sugimori and composer Junichi Masuda worked on both games.

Super Contra is a Run and Gun-style action game produced by Konami, originally released as a coin-operated arcade game in 1988. It is the sequel to the original Contra and the second game in the Contra series released for the arcades. Like in the original game, the game centers on soldiers Bill Rizer and Lance Bean, who are once again assigned to protect the Earth from an army of alien invaders. The game features standard side-scrolling stages, as well as all new overhead stages in lieu of the original game's "3D" stages.

Target Earth is a space shooting game set in the future with Earth under attack by robots. The protagonist of the game is a pilot of a mech robot which can either walk on planet surfaces or fly in space. There are two types of levels in the game. Surface levels take place on planets or moons and allow the mech to run and jump to the end of the level while fighting enemies, as in a side scrolling game. Space levels have no gravity and allow the mech to move in any direction. The mech can be equipped with a large assortment of machine guns, lasers, and grenades.

The Machine has enslaved the galaxy under its tyrannical rule. As Bren McGuire, the last survivor of the United Freedom Forces, it is your duty to destroy the evil forces of the Machine that have devastated the galaxy.

Legend of Hero Tonma is a side scrolling platform game released by Irem to arcades in 1989.

Alien Hominid Invasion is a co-op run ‘n’ gun packed with chaos, mayhem, and a whole lot of explosions. Unlock and equip an arsenal of weapons and boosts, level up, then beam down to invade Earth with up to three other friends. Abduct intel from your enemies to sabotage their plans, observe the oddities of human life, blow up bosses, and mutate into a variety of powerful Alien forms in order to take down the not-so-secret Agents that are dead set on ruining your day.

R-Type has returned! The legendary side-scroller is back and better than ever with beautifully rendered 3D graphics, exhilarating shoot-'em-up gameplay, and a multitude of stages, ships, and weapons that will allow you to conduct a symphony of destruction upon your foes.

Alien Storm is a side-scrolling beat 'em up. The game resembles Golden Axe, with a similar artistic style, three playable characters (a man, a woman, and a novelty character) and pick-up or power-up special attacks. The player (one player only on the Master System version, up to two players on the Mega Drive version, three on the arcade version) selects from the three different characters to embark upon a quest to save the Earth from an alien invasion. All of the Busters are playable from the beginning of the game. There are 6 missions to complete (8 in the Mega Drive version) with several stages, and each mission has the player blasting aliens, from the streets to the mother ship, where the mother of all aliens can be found. This task becomes increasingly difficult with each new mission, and the aliens are capable of hiding inside objects such as plants, postboxes, trashcans, drums, and other items. Each mission has an objective such as rescuing people or destroying an UFO. When dealing with a few aliens, flying heads will appear, which can be shot to collect life or energy. Energy is used specifically to power the energy based attacks of the player's weapon (such as flames or electricity) and to use the much more powerful special weapons. In a similar format as other early Sega arcade games, each character has unlimited usage of various short-range attacks, i.e. punches, kicks. Along with these standard attacks, each character has their own individual weapon (Garth's weapon that shoots lightning is replaced with a flame weapon in the Master System version). Special attacks are also included, and vary depending on the character chosen at the start of the game. For instance, Garth summons an U.S. Air Force starship that drops bombs across the street (in the Master System version he has Karen's special, a ballistic missile strike). Scooter will teleport out of his present location and leave a series of bombs that will blow up on the appearance of aliens, after which he will re-appear (in the Mega Drive version he just explodes, leaving his head, which his new body returns to retrieve). Karen calls down a nuclear missile, which incinerates every foe on the screen. However, a large amount of energy is depleted by using each character's special attack, and cannot be used if the energy of the player's character is too low. There are few bosses in the game. The arcade original only features a single boss that has three distinct forms. The Mega Drive port has two of these forms as two separate bosses. At the end of each mission, the side-scrolling gameplay shifts to either a shooting gallery perspective where the player must take out the aliens that pop out of various locations, similar to the bonus stages of Shinobi and Shadow Dancer, both also by Sega, or a running section that is similar to the side scrolling mode but plays like a horizontal shooter instead with projectile weapons.