Factorio is a mixture of top down crafting/survival game with production line design similar to Spacechem.
As the sole survivor from a spaceship, it is the player's job to prepare the randomly generated planet for the arrival of colonists. Players start with only basic hand tools that can be used to gather materials (wood, coal, stone, and ores) to produce better tools with.
Machinery can be developed to automate the collection of most materials. With the use of conveyor belts and robotic arms, players set about building a factory that can produce a wide variety of components that will be needed to advance.
Most machines require fuel to run, so initially, players must fill each one with coal by hand, players develop steam power and are able to power factories with electricity.
New technology is unlocked through the production of 'science packs' and gives access to a wider variety of products and components, as well as more advanced transport systems for the player's factory.
The native creatures do not take kindly to the pollution that is produced, so defense must also be factored in. Players can attack hostile creatures manually or create sentry turrets to automatically target enemies.
Steam Early Access
Factorio was released as an Early Access Game in February 2016.