Lunacraft - Lunacraft focuses on Endless Creativity and Exploration elements.
OpenTTD - An open-source clone of the classic game ...
Minecraft - A block-building game that allows you to create and explore entire worlds from scratch.
Micropolis - Micropolis is the open source version of SimCity Classic from Maxis, developed by Will Wright and Don Hopkins.
BlockWorld - BlockWorld is the largest blockchain developer & technology conference in the world.
Simutrans - Simutrans is an open-source transport simulator.