Games similar to Metaltech: Earthsiege:

Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders and Overlord series, bringing all the exciting tactical-turn based combat and in-depth 4X empire building of its predecessors to space in an all-new sci-fi setting. Emerge from the cosmic dark age of a fallen galactic empire to craft a new future for your people. Explore the planetary ruins and encounter other surviving factions that have each evolved in their own way, as you unravel the history of a shattered civilization. Fight, build, negotiate and technologically advance your way to utopia, in a deep single player campaign, on random maps and against friends in multiplayer.

A brand-new spaceship sandbox MMO set in an alternate New Eden, the sci-fi universe of Eve Online.

The Earthlings have joined the interstellar club. The galaxy will never be the same. The year is 2086 and Earth has detected an alien distress call originating from the surface of Triton. In response, Star Control is formed with you as The Captain of Earth's first prototype starship.

Guide a group of space settlers trying to establish an outpost on a remote planet. Grow food, collect energy, mine resources, manufacture bots, and build a fully self-sufficient colony.

In 30 days, help is coming... A mysterious radio transmission claims that help is inbound. You are Jacob Solomon: leader of a makeshift team trying to survive the aftermath of a devastating asteroid collision. The world you once knew is no more – buried deep beneath the constant snowfall. Your goal: keep your companions alive until rescue.

Ashes of the Singularity is a real-time strategy game set in humanity’s not-so-distant future. What it means to be human has changed with the coming of the singularity. In the post-human economy, sentience is now the most valuable commodity in the universe. The only way to acquire more of that is through the control of Turinium – programmable matter – which can extend consciousness to levels we can't even imagine. Worlds are being transformed into this substance and wars are now being fought across the galaxy for control of those worlds. Each conflict takes place across an entire world. It isn't a skirmish. It's a war. Thousands of units are constantly constructed and sent across the planet with the player directing entire armies, in real time, to capture key resources in an effort to gain total control of the planet.

It's one year after the collapse of civilization and self-centered hedge fund manager Joe Wheeler emerges from his specially constructed bunker in search of food. This is a huge open-world RPG where you have the freedom to play how you want - but your choices have consequences. Your aim is to find other survivors, gain their respect, and build a community. You'll scavenge for supplies, trade, plant crops, go on quests, face moral dilemmas, go to war, and uncover dark, terrible secrets!

Sol 0 is a real time strategy game where you establish the first Martian colony. From the first human footprints on Martian soil to a thriving and self-sustaining colony, Sol 0 imagines a near future using technology that could be available within the next few decades. Make use of minerals and resources across the Martian surface to expand from the first exploratory rover to an independent frontier.

Can anyone build an empire in a place like this? Other factions are naturally suspicious of newcomers and may wage war at the first sign of unidentified craft. Here, a natural death is an uncommon luxury.

We take the colony sim genre into the near future, onto a lush planet where humans are making their first foothold. Characters and alien wildlife are brought to life through a rigorous simulation and the game plays out as a tug-of-war between humans and nature on a planet full of opportunities and dangers. Understanding the alien environment is crucial - discovered resources and crafting options enable you to adapt when food gets scarce, equipment breaks and alien animals attack.