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Science-fiction MMORPG

Project Ion

Project Ion is a small, independently developed sci-fi MMOFPS/RPG virtual world built by two brothers under TestBuilt since 2011, featuring a real cash economy, crafting, mining and exploration.

Full profileSci-FiSandboxCatalog
In developmentCatalog signalHow signals work
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Platform availability

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WindowsRecorded
macOS
LinuxRecorded
Browser
Android
iOS
PlayStation
Xbox

Highlighted platforms are confirmed in MMOFinder’s current profile. Dimmed platforms have no confirmed listing.

Status
In development — an ongoing, independently maintained project confirmed active through 2026
Business model
Free-to-play
Genre
Sci-fi MMOFPS/RPG virtual world
Release
2019
Platforms
Windows, Linux
Developer
TestBuilt (Joey and Jelle Jansen)
Publisher
TestBuilt
Profile
Full
Research checked
2026-09-07
Visual playstyle profile

MMO DNA

A visual fingerprint built from MMOFinder’s current verified catalog fields—not a review score.

PvECombat focusPvP

PvE creature combat is balanced against optional PvP

SoloPlay styleGroup

Solo-friendly exploration with a shared player economy

StructuredWorld structureSandbox

A sandbox virtual world with a real player-driven cash economy

TargetedCombat feelAction

First/third-person real-time combat

HousingNot recordedCraftingRecordedTradingRecordedControllerNot recordedPvERecordedPvPRecorded
Player fit

Why you might like it

  • A genuinely long-running (since 2011) passion project maintained by two independent developers.
  • A real cash economy adds meaningful stakes to trading and resource gathering.
  • Active community forums and Discord show continued player engagement despite its small scale.
Before you play

Things to consider

  • Development is slow and sporadic, run by a two-person team in their free time.
  • As a small indie MMO, expect a modest population and rougher production values than commercial titles.
  • Long gaps between news updates mean the game's pace of new content can be unpredictable.
Transparency

Research record

Last checked
2026-09-07
Profile depth
Full
Source note
The official project-ion.testbuilt.org site (copyright notice through 2026) and Giant Bomb/IndieDB profiles
No direct official link verified in the current record.
Profile verification

What MMOFinder has checked

6/6documented areas
  • Gameplay featuresStructured gameplay fields were source-checked for this profile.Verified
  • Gameplay mediaOne source-attributed gameplay image is recorded.Partial
  • Source trail1 linked source is recorded for review.Verified
  • Last reviewedCatalog fields reviewed Aug 16, 2026.Verified

Coverage measures documentation completeness—not game quality, popularity or an endorsement.

How verification works

Game details can change. MMOFinder separates verified catalog fields from information that has not yet been confirmed.

Explore connections

Project Ion relationship map

Follow verified catalog signals to another world.

Current profileProject IonStart here
Combat matchTwilight War: After the FallBoth cataloged with Not yet verifiedGenre & settingStargate WorldsBoth cataloged as Science-fiction MMORPGShared featuresSiege on StarsCatalog features have since divergedBusiness modelProject GenomBoth recorded as Not yet verified

Connections use current MMOFinder catalog fields—not review scores or paid placement.

Game history

Project Ion timeline

A concise timeline built only from dates and lifecycle fields recorded in MMOFinder.

  1. 2019
    Released

    MMOFinder records Project Ion as released in 2019.

  2. Current
    Catalog status

    In development — an ongoing, independently maintained project confirmed active through 2026

  3. 2026-09-07
    Research checked

    Core catalog fields were reviewed for this profile.

Terms on this profile
Media

Project Ion screenshots & gameplay

Two verified gameplay screenshots for a quick look at the game in action.

Gameplay, availability and research notes

Project Ion is classified by MMOFinder as a Sci-fi MMOFPS/RPG virtual world. Project Ion is a small, independently developed sci-fi MMOFPS/RPG virtual world built by two brothers under TestBuilt since 2011, featuring a real cash economy, crafting, mining and exploration.

The verified profile records TestBuilt (Joey and Jelle Jansen) as developer, TestBuilt as publisher, 2019 as its release year and Free-to-play as the current access model. Supported platforms are Windows, Linux. Combat is recorded as First and third-person combat against creatures in an open world, alongside trading, crafting and mining. Discovery tags attached to the profile include Sci-Fi, Sandbox, Catalog.

Continue through the Similar Games recommendations for titles with overlapping catalog signals. For a broader search, filter MMOFinder's game database, browse MMO categories, or compare MMO profiles side by side. These routes are intended to make discovery useful even when an older or obscure game's research record is limited.

Continue discovering

If you like Project Ion…

These alternatives share verified genre, platform, access-model or gameplay signals with Project Ion. Connections describe catalog overlap rather than a quality ranking.

Why it connectsArgoBoth are part of MMOFinder's catalog, though genre classifications differ (Sci-fi MMOFPS/RPG virtual world vs. Post-apocalyptic hybrid MMORPG).Post-apocalyptic hybrid MMORPG · Free-to-playWhy it connectsFaction EarthShared catalog signals, though genre labels differ (Sci-fi MMOFPS/RPG virtual world vs. Science-fiction MMORPG).Science-fiction MMORPG · Not yet verifiedWhy it connectsForce of ArmsShared sci-fi signals, though genre labels differ (Sci-fi MMOFPS/RPG virtual world vs. Cancelled sci-fi mech MMORPG).Cancelled sci-fi mech MMORPG · Not applicable (never released)Why it connectsFreeWorld: Apocalypse PortalShared catalog signals, though genre labels differ (Sci-fi MMOFPS/RPG virtual world vs. Science-fiction MMORPG).Science-fiction MMORPG · Not yet verifiedWhy it connectsHostile SpaceShared catalog signals, though genre labels differ (Sci-fi MMOFPS/RPG virtual world vs. Sci-Fi MMORPG).Sci-Fi MMORPG · Free-to-playWhy it connectsPhylonShared mmofps, sci classification signals, though genre labels differ (Sci-fi MMOFPS/RPG virtual world vs. Sci-fi MMOFPS).Sci-fi MMOFPS · Premium (one-time purchase)
Community

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