Popular games for franchise Gradius

The Director General of Space Science Agency Dr. Venom was exiled to Planet Sard for a failed coup d'état. In the year 6665, he escapes and invades Planet Nemesis and the seven planets it controls with the help of Bacterion. The Nemesis High Council sends James Burton, ex-pilot of the Vic Viper, to pilot Metalion and attack Dr. Venom and the Bacterion invaders.

One of the defining characteristics of the Gradius series is the use of a "power meter." The power meter is powered by a power-up item, whose purpose, when collected, is to move a highlight to the next power-up on the power meter. When a power-up that the player wants becomes highlighted, he or she may activate it, also causing the highlight to reset.

The player returns as the role of the pilot of the Vic Viper spaceship to battle the second onslaughts of the Bacterion Empire, under the new leadership of Gofer, the giant head. Gradius II has kept the gameplay from the original game, but infused it with enhancements brought from the spin-off, Salamander (Life Force). This is primarily evident in two of the weapons configurations that are selectable. Another first in the series was the inclusion of the "boss rush" (also known as "boss parade" or "boss alley"), a level designed entirely with only boss confrontations. Gradius II retains the selection bar from Gradius, but now the player can choose between four different weapon configurations and progressions. All schemes have speed-up and multiples (Options), but have differing 'Missile', 'Double' (laser), and 'Laser' weapons. The player can have at most four multiples. Additionally, there are also two types of shielding to choose from: shield and forcefield. The shield option adds more durability, but only for the front of the Vic Viper, while the forcefield adds protection for the entire spacecraft, albeit only against three hits. In the Famicom version, choosing another multiple after four will make the four multiples to move around the spacecraft for 16 seconds; force field is the only shielding available for protection of the entire spacecraft, withstanding three hits and it is included in four different weapon configurations and progressions; and 'Double' and 'Laser' have to be activated twice to achieve full performance.

In the darkest reaches of infinite space, pure evil lies in wait ... The Dark Forces led by the god of destruction, Bacterian, prepare to launch a massive onslaught against the planet Gradius. Possessing unstoppable power, the Dark Forces threaten to plunge the Universe into total war and complete annihilation. Their invasion force smashes the Gradius defenses, and the surrounding planets soon fall like dominoes. Now Bacterian's evil grasp reaches for the heart of the resistance...planet Gradius itself... To counter the oncoming threat the United Gradius World Forces gather all their fighter craft. Half of them form a defensive net - the other half a strike team. But they are badly outnumbered and The Dark Forces easily tear through their thin frontline. No fighters survive the slaughter.... In a last gasp move, the United Gradius World Forces send out two fighters, previously considered too dangerous for combat missions: The InterDimensional VIC VIPER fighters. The Fighters take off for the heart of darkness to join the fray that will decide the fate of the Universe...

Salamander is a scrolling shooter arcade game released by Konami as a spin-off to Gradius. It introduced a simplified power-up system, two-player cooperative gameplay and both horizontally and vertically scrolling stages. Some of these would later become the norm for future Gradius games.

A fledgling television program has been suffering from poor audience approval, and the station that carries the show has informed its producers that they will have to rectify the situation or face inevitable cancellation. An unorthodox plan is implemented: broadcast a contest pitting various superstars from differing realities in physical combat in order to increase ratings.

Gradius IV is the fourth arcade installment in a series of scrolling shooter video games developed by Konami Computer Entertainment Tokyo. It was preceded by Gradius III, released in 1989, although spinoffs had been released prior to it such as Gradius Gaiden. This title brings a considerable graphical upgrade, particularly with the use of colored lighting. In addition, there have been several additions and removals to the vaulted weapons system; specifically, the edit mode has been removed and an online ranking system was added.

Otomedius Gorgeous is the Xbox 360 port of Otomedius Arcade, a side scrolling shooter by Konami which featured personification of space fighters from various Konami games like Gradius, Xexex, Salamander and Parodius. The name is a pun, being a portmanteau of the terms "otome" (meaning "maiden" in Japanese) and "Gradius". It was released for the Japanese Xbox 360 in November 20, 2008.

Otomedius Excellent is an Xbox 360 game and the sequel to the 2007 arcade game Otomedius by Konami, which is a spin-off of the side-shooting game Gradius series. It was released in March 2011 in Japan and early November of 2011. Otomedius Excellent features a single player campaign with a new story, and a Multiplay mode in which 2 other players can play in. Players with an Xbox Live subscription can play online with other players in Score Attack mode and check their scores against other players on the Leaderboard. Alternate costumes and new stages were made available after release.