Aces of the Galaxy

Nemesis is an Action game, developed by Konami and published by Ultra, which was released in Japan in 1990.

Assault Heroes is an arcade-style scrolling dual-joystick shooter where the player drives 4x4s or speedboats, sometimes moving around on-foot. Like most dual-joystick shooters, one stick controls the movement of the player while the right stick directs your gunfire. The objective of the game is to progress through each level, defeating enemies and huge bosses. Vehicle and player health slowly regenerate, while vehicles can be instantly repaired with a special pick-up item. Once your vehicle is destroyed, you run around on foot. You're limited to a weak machine gun, but get double points for destroyed enemies. Once you lose all your health, you lose a life. After about 10 seconds of being on foot, your vehicle respawns.

In 1983 Bally midway released the follow up to the original Tron game titled Discs of Tron. In Discs of Tron the game recreates the disc fighting sequence of the movie where you progress through different platforms in a disc battle against the evil enemy Sark. Once again players utilize an 8-way joystick for moving with one button for firing and a rotary dial for controlling the direction of the fire.

Defender is an arcade video game developed released by Williams Electronics in 1980. A shooting game featuring two-dimensional (2D) graphics, the game is set on a fictional planet where the player must defeat waves of invading aliens while protecting astronauts. Development was led by Eugene Jarvis, a pinball programmer at Williams; Defender was Jarvis's first video game project, and drew inspiration from Space Invaders and Asteroids. Williams planned to display the game at the Amusement & Music Operators Association (AMOA) trade show, though development delays resulted in the team working on the game up until the show started. Defender was commercially successful, selling over 55,000 units to become the company's best selling arcade game. Praise among critics focused on the game's audio-visuals and gameplay. It is frequently listed as one of Jarvis's best contributions to the video game industry, as well as one of the most difficult video games. Defender was ported to numerous platforms, inspired the development of other games, and was followed by sequels and many imitations.

THE ROAR OF THUNDER IS BACK! THE SERIES THAT CHANGED THE HISTORY OF ARCADE SHOOT'EM UPS IS COMING TO XBOX 360! Instill fear in your enemies with devastating attacks and earn the acclaimed title of Master Ace!

The player controls a small, circular spaceship which must travel around the screen collecting crystals. This task is made more difficult by the aliens which constantly swarm out from the portals on both sides of the screen. These can be shot down by the ship's gun (which has unlimited ammo) or eliminated by activating one of the player's limited supply of "smart bombs", which will clear the screen of all current enemies.

Step into the shoes of Magnus Tide, a young fighter pilot who must defend his home and way of life from enemies. Your fighter ship--the Sagittarius--can fire a variety of weapons and switch between hover and jet modes. The ship's maneuvering capabilities allow you to dive into canyons, soar over mountains, and explore different landscapes. Equally advanced are the enemy ships, which range from agile fighters to larger battleships and carriers.

In this vertical scrolling spaceship shooter, you control a ship that can change its polarity at will. As blue/white, the ship can easily destroy red/black enemies, and vice versa. Bullets of your polarity can be collected to fuel your energy gauge, but those opposite will kill you. Destroying an enemy ship causes them to fire revenge bullets which can be absorbed and fired back by the player. Different difficulties exist to change exactly how you interact with polarized points, or how they appear. It is the spiritual successor to Radiant Silvergun, featuring similar level and boss design, as well as it's buddhism inspired themes and aesthetics. Both are directed by Hiroshi Iuchi, who also composed Ikaruga's soundtrack.

The player controls Spike Spiegel's Swordfish II from a third person perspective. Each level involves chasing another ship (the bounty head) along a set track through different environments, while enemies (spaceships, robots, etc.) attack. Each stage ends with a boss battle, confronting your target. Between stages, bonus points earned can be spent to purchase upgrades for the ship (faster speed, more powerful ammo, stronger laser).

The objective of Galaga is to score as many points as possible by destroying insect-like enemies. The player controls a starfighter that can move left and right along the bottom of the playfield. Enemies swarm in groups in a formation near the top of the screen, and then begin flying down toward the player, firing bombs at the fighter. The game ends when the player's last fighter is lost, either by colliding with an enemy or one of its bullets, or by being captured. Galaga introduces a number of new features over its predecessor, Galaxian. Among these is the ability to fire more than one bullet at a time, a count of the player's "hit/miss ratio" at the end of the game, and a bonus "Challenging Stage" that occurs every few levels, in which a series of enemies fly onto and out of the screen in set patterns without firing at the player's ship or trying to crash into it. These stages award a large point bonus if the player manages to destroy every enemy. Another gameplay feature new to Galaga is the ability for enemies to capture the player's fighter. While the player is in control of just one fighter, a "boss Galaga" (which takes two shots to kill) periodically attempts to capture the fighter using a tractor beam. If successful, the fighter joins the enemy formation. If the player has more lives remaining, play resumes with a new fighter. The captured fighter flies down with the enemy that captured it, firing upon the player just like normal enemies, and can be shot and destroyed. The player can free the fighter by destroying the boss Galaga while in flight, causing the captured fighter to link up with the player's current fighter, doubling his or her firepower but also making a target twice as large. Galaga has an exploitable bug that can cause the attackers to stop firing bullets at the player, due to a coding error. In addition, similar to the famous "Split-Screen bug" in Pac-Man, a bug exists in Galaga in which the game "rolls over" from Level 255 to Level 0. Depending on the difficulty setting of the machine, this can cause the game to stall, requiring that the machine be reset or power-cycled in order to start a new game.