Rensenware

Rensenware is a ransomware that infects Windows computers. This ransomware was created as a joke by the Korean programmer Kangjun Heo . The ransomware was discovered on April 6, 2017. Rensenware is unusual as an example of ransomware in that it does not request the user pay the creator of the virus to decrypt their files, instead requiring the user achieve a required number of points in the 2009 bullet hell video game Touhou Seirensen ~ Undefined Fantastic Object before any decryption can take place. The main window displays Minamitsu Murasa, a character from the game.

[RaidenKaiser]

I can still barley believe this happened lol even soulsbourne challenge runners don't fuck with touhou so you know people were fucked when it's that hard lol.