Unreleased LoL card game leaked

A hacker using the name "Jason" took control of Riot Games president and co-founder Marc Merrill's Twitter account over the weekend, and used it reveal a League of Legends card-based game.

"Riot don't want you to play this game," pronounced the hacker. The title in question is called League of Legends: Supremacy, and in another tweet the hacker reveals that "it's a standalone game."

He also claims that the game "was fully completed, but never released" and posted a link to the following card templates and text icons to further substantiate his claims.

The tweets, which were spotted by Kotaku, have since been deleted, and control of the account has been handed back to Merrill. In response to the leaked materials, Merrill said: "Someone shared some old screens from one of the many prototypes we've experimented with. We're always working on a variety of new ideas for League & beyond. Lots of experimentation that may never see the light of day :)"