Description: Natural Selection is a mod for the first-person shooter Half-Life that eventually turned into a full stand-alone game. It features complex real-time strategy gameplay with two opposing alien races fighting for control of territory and resources.
Type: software
Pricing: Open Source
Description: Spore is a single-player open-ended god game developed by Maxis. It allows players to control the evolution of a species from a single cell to a galactic empire, spanning stages including cell, creature, tribe, civilization, and space. Gameplay is broken into distinct 'eras' based on a species' progress.
Type: software