Terraria - Dig, Fight, Build! The very world is at your fingertips as you fight for survival, fortune, and glory.
Dwarf Fortress - Dwarf Fortress is a single-player fantasy game with two modes: fortress and adventure.
Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.
RimWorld - RimWorld - A sci-fi colony sim driven by an intelligent AI storyteller.
Life is Feudal: Your Own - Life is Feudal: Your Own is a Massively Multiplayer, Role-playing, Open World and Survival video game developed and published by Bitbox Ltd.
Terasology - Terasology (started under the name Blockmania) is an open source project started by Benjamin...