In a new update, a fighting game mode has been added to Digital Extremes' free-to-play shooter, Warframe. The mode is called Frame Fighter, and it's also free to play.
To play Warframe's Frame Fighter, you'll need to go to Cephalon Simaris in the Sanctuary and spend Standing on the Ludoplex. In Frame Fighter, you can play as three different Frames, which are Excalibur, Volt, and Mag. Each one has its trademark ability, and more Frames can be added by scanning Fragments throughout the Warframe world.
Apparently, a fan by the handle of LozoCrazy_ was somehow involved in the creation of Frame Fighter. In addition to that, there are other side modes included in the Cephalon Simaris area. There's a side-scrolling shooter called Wyrmius, and a Flappy Bird sort of deal called Happy Zephyr. Apparently, there are alternative, secret ways to access these modes as well.
The update also includes some new Amp Parts, and some new Dojo Decorations based on natural environmental assets from various locations within Warframe.
Source: Official Website