Vertix.io, otherwise known as Vertix or Vertix Online is a 2d shoot-em-up game created by Krunker's lead developer Sidney de Vries.[1] It is the main inspiration of Krunker, featuring prototype versions of some of its most popular classes.
Vertix.io is very similar to Karnage.io and Krunker.io. Unlike Krunker.io, This game requires an email ID to register an account.
Vertix was first released in 2015 as a beta. The game consists of 10 classes the player can choose from, 7 of which are present in Krunker. They list as follows: Triggerman, Hunter, Detective, Run N Gun, Vince, Rocketeer, Spray N Pray, Arsonist, Duck and Nademan.