Warframe is a Massively Multiplayer Online Third-Person Shooter by Canadian developer Digital Extremes that vastly expands on the gameplay, story and concepts introduced in the 2008 third person action game darkSector and is considered by the dev team to be everything that the latter game should have been.
The future is here, and everything sucks. Mankind as we know it is long gone. The aftermath of the Old War against the Sentients has destroyed the ancient Orokin Empire that ruled the system, and scattered the Tenno across the known universe. These masters of the blade, the gun, and the mighty Orokin combat platform known as the Warframes lie dormant in cryosleep.
The fascist, militaristic Grineer Empire is subjugating and crushing its way through the Solar System with a flood of degenerating clones, sustained by perverted science. Humanity lives in terror of the Twin Queens and their cronies, who rule with an iron fist and slaughter with impunity. Anything they can't annihilate or rule is bought and sold by the Corpus, a machine-obsessed, profit-worshipping merchant alliance/cult of backstabbing sadists who'll kill each other for a few credits and run the interplanetary Solar Rails, seeking to recover ancient artifacts at any cost, enslaving populations and profiting from their endless proxy wars. And what the Corpus can't buy is infected by the virulent and ancient Technocyte Plague that preys on both, twisting them into horrifying Infested that exist only to destroy, consume, and assimilate. And somewhere, caught in the middle of all this, are descendants of ancient humans, independent colonies, and ragtag groups unaffiliated with these monolithic superpowers, desperately trying to avoid assimilation or destruction.
In response, the mysterious Lotus begins reactivating the Tenno en masse to free the solar system, protecting the helpless and stealing back Orokin artifacts each faction has hoarded.
The Tenno must band together against the hostile factions. They must steal, kill and sabotage to reclaim their Origin system while saving any of their number that fall into enemy hands. Each mission is a fast-paced PvE shoot-and-slash romp, with both combat forms flowing seamlessly together. There are no bots: if you have no teammates, you're forced to go alone, and stealth becomes the better part of valor. Between missions, you can upgrade your weapons or manufacture new ones. The titular Warframes — the game's characters or classes — are also unlocked by way of manufacturing them from blueprints and materials.
Of course, the Tenno are not alone in their endeavors, and not all hope is lost across the system; on some planets, small, close-knit communities eke out their existences, from the humble, but secretive Ostrons who live out their lives fishing and trading on the Plains of Eidolon, all while under the watchful care of an ancient, sentient Orokin superstructure that defends them against encroaching threats, to the hardworking, but rebellious Solaris, indentured workers under the thumb of the merciless Corpus plutocrat Nef Anyo, working tirelessly and constantly to see their debts settled so that one day they might see freedom (despite Anyo piling even more debts upon them to keep them in chains), while secretly working against him in an underground resistance movement, in order to end Nef's tyranny in a more forceful and definite manner. Its up to the Tenno to work with these factions, and several others, to help end the troubles plaguing the system and lead it into a new era of peace...However, the Grineer, the Corpus, and the Infested are not the only threats out there, and come what may, the Tenno may soon find themselves facing down old enemies and ancient threats with nefarious plans for the Sol system...
Digital Extremes is unusually interactive with their playerbase and frequently makes balance and aesthetic changes based on outpouring community feedback, contrary to the tendency of general MMO service providers to fall back on vague statistics or appeal to a Silent Majority. As a result the game is rapidly evolving as it grows. The developers even caught Sony's eye and was invited to bring the game onto the Playstation 4 as a launch title with promises of a whole new development team for the console version.