Power Rangers Lightforce

Power Rangers Lightforce, known in Japan as セラフィム戦隊爆発レンジャー (Serafimu sentai bakuhatsu renjā, Seraphim Squadron Explosive Ranger) is a RPG game for Nintendo 64, PlayStation and Sega Saturn.

Story
In the game's opening sequence, a peaceful-looking planet with gardens, rivers, and residential buildings abound is shown. The space pirate, Artemis, drops from the sky with a band of soldiers to raid the planet. Altair, the leader of the space pirates, watches from the Erebus Fortress, using his coveted weapon, the Omni Cube, to completely drain the planet's energy, condemning it to a zombie-like state.

Artemis returns to the Erebus Fortress to meet up with her partners, fellow pirates Orion and Regulus and her superior, Altair. Together, they set their sights on their next target: Earth. They manoeuvre their fortress into the atmosphere of Earth.

Roy and his 4 friends, from atop a cliff, observe the Erebus Fortress' descent. Not much later, the Fortress begins to open fire on the people of Planet Bomber, firing destructive energy rays into populated areas.

A warrior clad in white then flies out to the surprised group, and asks if he plans to defeat the assailants. Roy gives an affirmative response, and giving the morphers to them, the stranger (later introduced as Sirius) explains that a force field protects the Fortress from any outside attack. Sirius goes on to say that this force field can be deactivated by destroying the four anchors attached to the Fortress; the "Toutatis Garden": a ruin-filled natural world, "Poseidon Resort": a fortress surrounded by water, "Ares Mountain": a large volcano fraught with danger, and "Odin Glacier": a large, snowy mountain covered in ice. Once inside the Fortress, they must find and destroy Altair.

The 5 rangers climb onto and destroy the four anchors with the help of Sirius, who supplies power-ups and teaches them new techniques. In the process, they fought and killed Artemis and Orion, but Regulus survives. Once the force field around the Fortress is deactivated, the team enter the Fortress. After sneaking through Altair's security measures, the rangers find and confront Altair, and after a difficult struggle, defeats the pirate. The previously defeated Regulus swoops in and attempts to rescue his master from the battlefield, but is then knocked away by Sirius. Altair drops the Omni Cube, which Sirius lands on the battle platform to retrieve. Altair is annihilated by a newly powered-up Sirius. Sirius reveals that he was only using their abilities into taking back the Omni Cube which was stolen by Altair, adding that he was sick of working with him and lying to him during the mission. He takes the Omni Cube and escapes to his secret lair to destroy Earth.

The rangers pursue him, making their way through the palace, confronting Sirius for their betrayal. When Sirius is about to fire on the rangers, they are saved by Regulus, knocking him away and destroying the Omni cube. With the aid of Regulus, the rangers defeat Sirius. Without the power of the Omnicube, The Seraphim Palace crashes into the Erebus Fortress, destroying both, as Regulus escapes with the 5 rangers, informing them that he was surprised with their ability to defeat Sirius, as he and his comrades had considerable difficulty taking the Omnicube from Sirius. Regulus leaves Earth, stating that one day he will have a rematch with his new rival, Red Ranger, who celebrates the ranger's victory.