Publisher Nexon is taking its Counter-Strike mod that added zombies to the first-person shooter and throwing a little Minecraft into the mix. Players will be able to build their own blocky custom maps in Counter-Strike Nexon: Zombies thanks to the free-to-play game’s new Studio Mode.

Studio Mode lets players create, play and share their creations in Counter-Strike Nexon: Zombies. Players can add traps, obstacles and hide outs, while laying out friendly and enemy NPCs, to build their own custom levels. A brief trailer, posted above, shows what Studio Mode is capable of.

Building requires some specific items — confusingly named the Build Scanner License Item and Build Minigun License Item — and Nexon says it’s holding a “fan event” from Nov. 29 to Dec. 6 where players can receive one of those for free.

You can grab the Studio Mode update (and Counter-Strike Nexon: Zombies) for free from Steam, if you’re curious.

Counter-Strike Nexon: Zombies launched in 2014. The game is based on a modified version of Counter-Strike 1.6 and includes content from the original game plus zombies and zombie-related game modes. The game is free-to-play and can get very weird if you’d like to give it a try.

Nexon’s take on Counter-Strike gets a Minecraft-like building mode