In a bizarre twist in a constantly changing security environment, a new form of ransomware running wild does not ask victims for a payment but instead forces them to play PlayerUnknown’s Battlegrounds, a battle royale game that first become popular last year.

The infection route for the PUBG Ransomware, first revealed in a tweet Monday from Malware Hunter Team, isn’t clear. But once on a victim’s computer. it encrypts files such as images, music and documents before making its ransomware demand: The victim must play PUBG for one hour to have the files released.

“Your files is encrypted by PUBG Ransomware! but don’t worry! It is not hard to unlock it,” the ransomware note reads. “I don’t want money! Just play PUBG 1Hours!”

Suggesting that the ransomware may be an elaborate joke, there are two ways to unencrypt the files, according to Bleeping Computer. The first is to apply the decryption key of s2acxx56a2sae5fjh5k2gb5s2e offered in the ransom text into the decryption option on the ransomware popup. Alternatively, victims can play PUBG for a total of three seconds, as the ransomware itself only detects it launching, not how long people play it.

What has motivated the creator of the ransomware is speculation but a possible motive could be a PUBG fan upset by the rise of rival battle royal game Fortnite. In the battle royale format, inspired by the Japanese film of the same name released in 2000, players fight each other, with the last person remaining winning the game.

Although there were multiple titles in the past, PUBG was the first game to seriously popularize the format, quickly becoming the most popular online game by September before hitting the top-10 best-selling games of all time in February. Fortnite, a standalone end-of-the-world zombie game, seeing the popularity of PUBG, added a battle royale option in early access in September.. It has since gone on to surpass PUBG in popularity and is now believed to be the biggest game in the world, surpassing even Minecraft.

Some fans accuse Fortnite of copying PUBG, a difficult concept given that PUBG was not an original idea to begin with, although it’s likely that PUBG inspired Fortnite’s version.

Image: MalwareHunterTeam