Confirmed as FAKE
The new Riot Games fighting game Project L was rumored to include NFTs, a supposedly leaked screenshot of the website showed.
Text on the upcoming website, detected by a Reddit sleuth, shows the text “Earn and battle with NFTs as digital items.” But this was confirmed as fake news.
A user named “bgaw” in the DB discord server has captured 2 screenshots and a recording of the Project L page on riotgames.com.
This fake screenshot clearly shows the text:

Here is a shot of the top half of the fake website:

Riot Games would be unlikely to fully include NFTs this early in the NFT gaming space, considering their massive success with traditional gaming.