[PC] Free: Surviving Mars (Normally $27.99 USD) @ Epic Games

Epic Games is offering Surviving Mars for free. Fairly positive Steam reviews

Note: Make sure to scroll down the page: there are THREE TWO DLCs that are also free this week. Make sure to add them manually so they are in your account!

From the website:

Surviving Mars

Colonize Mars and discover her secrets, with minimal casualties.

Welcome Home! The time has come to stake your claim on the Red Planet and build the first functioning human colonies on Mars! All you need are supplies, oxygen, decades of training, experience with sandstorms, and a can-do attitude to discover the purpose of those weird black cubes that appeared out of nowhere. With a bit of sprucing up, this place is going to be awesome!
Surviving Mars is a sci-fi city builder all about colonizing Mars and surviving the process. Choose a space agency for resources and financial support before determining a location for your colony. Build domes and infrastructure, research new possibilities and utilize drones to unlock more elaborate ways to shape and expand your settlement. Cultivate your own food, mine minerals or just relax by the bar after a hard day’s work. Most important of all, though, is keeping your colonists alive. Not an easy task on a strange new planet.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.

Main Features:

• Building a sustainable colony in space
  Building on a planet not fit for human life challenges you to build a smart, functional colony. Bad planning isn’t about traffic jams, it’s about survival of your colonists. You really don’t want rolling blackouts in a city constructed in a place without oxygen.
• Individually simulated colonists
  Each colonist is a unique individual with problems and strengths that influence the needs and behavior of the other colonists. Things can get really interesting if your chief scientists develops alcoholism after one too many long nights in the lab.
• Futuristic Space Dome construction
  Retro-futuristic super structures housing colonists, factories and commercial buildings with their own “neighborhood personality.” Create colonies that value science over everything else, while tired workers drink their pay away at a local bar, or attempt a utopia among the stars.
• Exploration of Mars’ secrets
  Inspired by the classic sci-fi of Asimov and Clarke, Surviving Mars holds many secrets. During each playthrough players may encounter one of Mars’ individually crafted mysteries. Uncovering these secrets might bring your colony great fortune, or terrible ruin. What is that sphere that manifested itself outside colony HUB B, and is it friendly?
• Randomized research tree
  Combine static and random research through experimentation, which allows for a different experience for each journey through the game. Attain new scientific breakthroughs by exploring the uncharted terrain of Mars's surface.

via Lysander on OzBargain