Ultra Street Fighter 4 is one of six confirmed games for this year's Evolution Championship Series, but Super Smash Bros. Melee is a doubt. Event organizer Shoryuken revealed it's in "preliminary discussions" with Nintendo about featuring the GameCube brawler in the fighting game tournament, following the stir its inclusion caused last year.

Melee was the eighth game to be included in last year's line-up, after it won a fan vote that raised $225,724 for breast cancer research. However, a few months after Nintendo moved to claim revenue on Let's Play videos featuring its games, the company requested Melee be removed from the EVO 2013 streaming line-up. The move was received with an immediate backlash, and Nintendo swiftly reversed its decision.

The circumstances are different this time-around. For one, Melee is just another potential game in the line-up, not one voted for by fans with charity money behind it. Still, it'll be interesting to see which way Nintendo swings on approval this time, especially in the same year that a new Super Smash Bros. game is set to arrive on Wii U and 3DS.

As for the rest, Injustice: Gods Among Us, Killer Instinct, and Blazblue: Chrono Phantasma join Ultra Street Fighter 4 as newbies to the championships, while King of Fighters 13 and Ultimate Marvel vs. Capcom 3 return from last year's selection. The event itself takes place on July 11-13 at the LVH Hotel and Casino in Las Vegas, but if you can't make it to Nevada you can always tune in on Twitch. [Image: Shoryuken]