Quake - Quake is a series of first-person shooter video games released by id Software.
Roblox - Reimagining the way people come together.
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Minetest - Minetest is a near-infinite-world block sandbox game and a game engine, inspired by InfiniMiner...
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.