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Sci-fi
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List of the top Sci-fi games:

The top results based on the latest update are XCOM: Enemy Unknown [Score: 23.3], Mass Effect (2007) [Score: 22.8] and Half-Life 2 [Score: 20.2] The top rated games you can find here are Half-Life 2 [SteamPeek Rating: 11.8] ranked #3, Portal [SteamPeek Rating: 11.7] ranked #21 and Titanfall® 2 [SteamPeek Rating: 11.7] ranked #27 Also don't forget to check the newest releases Hardspace: Shipbreaker [Release date: 2022-05-24] ranked #20, Mass Effect™ Legendary Edition [Release date: 2021-05-14] ranked #35 and Titanfall® 2 [Release date: 2020-06-18] ranked #27 While it is tempting to play with the newest and the best, there might be some other gems in the results, like STAR WARS™ Knights of the Old Republic™ [SteamPeek Rating: 9.3] ranked #12, Vanquish [SteamPeek Rating: 7.8] ranked #13 and STAR WARS™ Empire at War: Gold Pack [SteamPeek Rating: 10.1] ranked #14.

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Half-Life 2

 Half-Life 2

11.8 172020 4126
16 Nov, 2004

Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

Supreme Commander: Forged Alliance

 Supreme Commander: Forged Alliance

8.8 8726 308
28 Sep, 2011

The last days of man are at hand.. Two years after the Infinite War the once great warring nations now lie in ruins, and humanity’s hope for a brighter future is nothing but a bitter memory. A new, seemingly unstoppable enemy, supported by the zealots of The Order, now seeks to eradicate mankind: UEF, Aeon Loyalist, and Cybran alike.

Half-Life 2: Episode One

 Half-Life 2: Episode One

9.8 25321 1089
1 Jun, 2006

Half-Life 2 has sold over 4 million copies worldwide, and earned over 35 Game of the Year Awards. Episode One is the first in a series of games that reveal the aftermath of Half-Life 2 and launch a journey beyond City 17. Also features two multiplayer games. Half-Life 2 not required.

Half-Life 2: Episode Two

 Half-Life 2: Episode Two

10.2 33447 971
10 Oct, 2007

Half-Life® 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life® adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions.

Prey

 Prey

9.4 30621 3181
4 May, 2017

In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.

STAR WARS™ Knights of the Old Republic™

 STAR WARS™ Knights of the Old Republic™

9.3 23834 2368
5 Sep, 2009

It is four thousand years before the Galactic Empire and hundreds of Jedi Knights have fallen in battle against the ruthless Sith. You are the last hope of the Jedi Order. Can you master the awesome power of the Force on your quest to save the Republic? Or will you fall to the lure of the dark side?

STAR WARS™ Empire at War: Gold Pack

 STAR WARS™ Empire at War: Gold Pack

10.1 31091 736
25 May, 2010

Command or corrupt an entire galaxy in the definitive Star Wars strategy collection. It is a time of galactic civil war. Will you take up the reins of the Rebellion, assume control of the Empire, or rule the Star Wars Underworld?

Check out these great games:

Abalon Arena: Multiplayer Card Tactics on SteamTerminus on SteamPlantera2 on SteamKnock on the Coffin Lid on Steam

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Homeworld Remastered Collection

 Homeworld Remastered Collection

8.3 9994 1308
25 Feb, 2015

Experience the epic space strategy games that redefined the RTS genre. Control your fleet and build an armada across more than 30 single-player missions. Choose unit types, fleet formations and flight tactics for each strategic situation.

Stellaris

 Stellaris

10.3 109921 14951
9 May, 2016

Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.

Half-Life: Blue Shift

 Half-Life: Blue Shift

9.0 14677 1178
1 Jun, 2001

Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

STEINS;GATE

 STEINS;GATE

9.6 17875 464
8 Sep, 2016

Developed by 5pb. and Nitroplus, STEINS;GATE was awarded Famitsu magazine's coveted annual Game of Excellence award and was voted one of the most emotionally charged “tear-inducing games” ever made, in a Famitsu poll. It is a gripping and moving Visual Novel, which has already spawned manga and anime adaptations.

The Fall

 The Fall

7.0 2429 332
30 May, 2014

Take the role of ARID, the artificial intelligence within a high-tech combat suit. The Fall is a unique combination of adventure-game puzzle solving and side-scroller action, all set within a dark and atmospheric story. Get ready for a disturbing journey as you explore the world of The Fall.

Titanfall® 2

 Titanfall® 2

11.7 205960 10004
18 Jun, 2020

Respawn Entertainment gives you the most advanced titan technology in its new, single player campaign & multiplayer experience. Combine & conquer with new titans & pilots, deadlier weapons, & customization and progression systems that help you and your titan flow as one unstoppable killing force.

Check out these great games:

Abalon Arena: Multiplayer Card Tactics on SteamPlantera2 on SteamTerminus on SteamKnock on the Coffin Lid on Steam

If you'd like to promote your game here just send a letter to [email protected]

Singularity

 Singularity

7.9 4675 354
30 Jun, 2010

FIGHT THE PAST TO SAVE THE FUTURE. STOP THE SINGULARITY. Learn the truth behind a massive cover-up of the catastrophic SINGULARITY, an event that fractured time and threatens the world as we know it. Armed with powerful, advanced weaponry and the experimental Time Manipulation Device, fight enemies from the past, the present, and...

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