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Moonbase Alpha cover art

Moonbase Alpha

Virtual Heroes · NASA · 2010-07-06

Steam

AdventureSimulationStrategy

Modes: Single player, Multiplayer, Co-operative

NASA has once again landed on the lunar surface with the goal of colonization, research, and further exploration. Shortly after the return to the Moon, NASA has established a small outpost on the south pole of the moon called Moonbase Alpha.

4
playing now
1,000,000–2,000,000
owners (SteamSpy est.)
Free
steam price (US)

4 players in-game as of 2026-08-30 17:00 UTC (census sample)

NASA has once again landed on the lunar surface with the goal of colonization, research, and further exploration. Shortly after the return to the Moon, NASA has established a small outpost on the south pole of the moon called Moonbase Alpha. Utilizing solar energy and regolith processing, the moonbase has become self-sufficient and plans for further expansion are underway. In Moonbase Alpha, you assume the exciting role of an astronaut working to further human expansion and research. Returning from a research expedition, you witness a meteorite impact that cripples the life support capability (Storyline via IGDB)

Health check

Insufficient data
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Players online

712026-08-06 21:00 — 3 players2026-08-07 05:00 — 1 players2026-08-07 13:00 — 2 players2026-08-07 21:00 — 1 players2026-08-08 05:00 — 2 players2026-08-08 13:00 — 2 players2026-08-08 21:00 — 3 players2026-08-09 05:00 — 4 players2026-08-09 13:00 — 4 players2026-08-09 21:00 — 3 players2026-08-10 05:00 — 4 players2026-08-10 13:00 — 1 players2026-08-10 21:00 — 2 players2026-08-11 05:00 — 4 players2026-08-11 13:00 — 5 players2026-08-12 21:00 — 1 players2026-08-14 05:00 — 2 players2026-08-15 12:00 — 1 players2026-08-16 20:00 — 3 players2026-08-18 04:00 — 2 players2026-08-19 11:00 — 1 players2026-08-20 19:00 — 1 players2026-08-22 02:00 — 1 players2026-08-23 10:00 — 2 players2026-08-24 18:00 — 2 players2026-08-26 02:00 — 1 players2026-08-27 10:00 — 2 players2026-08-28 17:00 — 7 players2026-08-30 01:00 — 5 players2026-08-30 17:00 — 4 players
Concurrent players, hourly average, last 30 days (census samples).

Details

WindowsSingle-playerMulti-playerCo-opValve Anti-Cheat enabledStatsSteam LeaderboardsFamily Sharing

1 supported languages: English

Census log

Computed from census-recorded observations only — dates are observation dates.

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Similarity via IGDB.

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