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Relentless Expanse

Relentless Expanse

Capture and upgrade planets, outsmart your enemies, and conquer the galaxy! Simple yet addicting, you can play alone or outsmart your friends in this 2D top-down space RTS. Completely free, no monetization, just fun!

Released Jan 14, 2025 Developer Cowmera Games Platforms Windows StrategyRTSMultiplayerSci-fiSpace
View on Steam ↗ Free (US · as of 2026-05-14)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26.

91.1%positive112 reviews
Recommended · 0 found this helpful

“very nice, it's great you can format it to suit your time investment. I like to play this game when I'm waiting on colleagues, since a round can be 5 minutes or 30. The developer is great, listens to suggestions and answers in the Discord. Looking forward to the next update with…”

— a player, Steam review · 129 hrs played
Recommended · 0 found this helpful

“Good game”

— a player, Steam review · 3 hrs played
Recommended · 1 found this helpful

“I love planet conquering games!!! If you know others not mentioned on the list, please do tell :D Relentless expansion: + Good music, simple nice graphics, you upgrade, ship production,energy and also defense on planets. No diplomacy but you can play against up to 15 other Ai :D…”

— a player, Steam review · 1 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. History through 2026-06 via SteamCharts; self-collected from the Steam API since Aug 2026.

16all-time peak
0 5 10 2026 No data collected for this period No data collected for this period No data collected for this period No data collected for this period 6 avg · Jan 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.

45achievements
14.6%median completion
3.1%rarest: Homeless Victory
82.4% of players 64.6% of players 63.9% of players 50.3% of players 44.2% of players 35.9% of players 34.4% of players 33.0% of players 23.3% of players 21.4% of players 20.3% of players 19.7% of players 17.9% of players 17.2% of players 16.9% of players 16.8% of players 16.2% of players 16.0% of players 15.4% of players 15.3% of players 15.3% of players 15.2% of players 14.6% of players 11.8% of players 10.2% of players 9.4% of players 9.1% of players 9.1% of players 8.0% of players 8.0% of players 7.4% of players 7.0% of players 6.6% of players 6.4% of players 6.3% of players 6.0% of players 5.9% of players 5.9% of players 5.7% of players 5.1% of players 4.5% of players 3.8% of players 3.7% of players 3.2% of players 3.1% of players 82.4% 0% most earned rarest
Almost everyone has
82.4%Solar System Conqueror — Take over 10 planets.
64.6%Win A Game — Win your first game in singleplayer or multiplayer!
63.9%Energy Hoarder — Have 1,000 energy at once.
Rarest badges of honor
3.1%Homeless Victory — Win the game against all odds.
3.2%Low Income Victory — Win the game despite being poor.
3.7%Jelly Victory — Win a game using the "Jellyfish" galaxy shape.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Sep 17, 2026
Cowmera Games September 2026 Studio Update

Hey everyone, Relentless Expanse is coming up on its 2-year anniversary in a few months, and our next game is still coming along well (hoping to announce it soon!), but I recently realized that I've n

Aug 16, 2026
Cowmera Games August 2026 Studio Update

Hey everyone, this month I wanted to talk about something that I've been wanting to go into detail about for a while now; the history and creation of Relentless Expanse! Now, unlike many indie devs, R

Jul 17, 2026
Update v0.6.8 - Ko-fi Announcement, New Font, New Map, and Maintenance Fixes!

For this month, we have another Relentless Expanse update rather than just a studio update! For this update, we mainly focused on general maintenance for the game, but there's still a new map from las

Jun 15, 2026
Update v0.6.7 - Cowmera Games 1-Year Anniversary Update + Event

Before I start talking about anything else, I first wanted to say that we’re hosting an event on our community discord server to celebrate the 1-Year Anniversary for Cowmera Games! Do you have a map i

May 19, 2026
Cowmera Games May 2026 Studio Update

Hey everyone, we're not dead! We've been hard at work on our next game for the studio (hint hint), although I can understand why you would think otherwise since we've been deathly silent since the 1-y

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-26.

GenresIndie, Strategy, Free To Play, Early Access
Player tagsStrategy · RTS · Multiplayer · Sci-fi · Space · Grand Strategy · Real Time Tactics · PvP · 2D · Top-Down · Diplomacy · Economy (SteamSpy community voting)
FeaturesSingle-player · Multi-player · PvP · Online PvP · Family Sharing
LanguagesEnglish * *
Achievements45
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Windows 10 Processor: Anything made within the last decade. Memory: 2 GB RAM Graphics: Anything made within the last decade. Storage: 1 GB available space Sound Card: Anything VR Support: None Additional Notes: These requirements are simply meant to reflect that the game should be very easy to run on most machines.