Side note, but fun fact! Fortnite, the uberpopular battle royale game, is actually itself a mod of the original Fortnite (now called "Fortnite: Save the World").

Originally a tower defense game (you build structures and traps to defend your base against invading alien zombies), some Epic & Unreal Tournament developers decided to fork it into a PvP (competitive player-vs-player) battle royale game instead, loosely based off Player Unknown's Battlegrounds.

It became a surprise hit, propelling Fortnite from "niche DIY tower defense game" to global pop-culture phenomenon.

https://en.wikipedia.org/wiki/Fortnite_Battle_Royale#Develop...

(edit: this was reposted... old comment was in the wrong thread)