Compare Alone on Mars prices across trusted key stores and find the best deal. Developed by Gnelf. Published by Gnelf. Released on 8/30/2021. Available on PC. Genres: Action, Adventure, Indie.

A micro-budget 2D survival shooter with tower-defense bones that costs less than a coffee, but honesty demands you know what you're actually getting before you click.

I went in with low expectations and still came out with mixed feelings, which is its own kind of achievement. Gnelf's solo-developed Alone on Mars pitches itself as a 2D side-scrolling platformer fused with sandbox freedom and tower-defense structure. You respond to an SOS signal from Mars, land amid alien-overrun space stations, and your core job is to defend a generator while pushing outward through hostile environments and gradually unlocking new weapons. The premise is thin but functional, the kind of sci-fi skeleton that a small game can absolutely get away with if the moment-to-moment play holds up. On that front, the results are uneven. The generator-defense loop is the clearest idea here, giving each encounter a focal point that keeps the round-based structure from feeling completely formless. Weapon unlocks add a small dopamine tick when they land, and some guns fire multiple rounds in patterns that demand you actually learn their behavior rather than just spray. That small layer of mastery is genuinely interesting. What hurts the game is that the sandbox and tower-defense promises feel more like marketing shorthand than implemented systems. Players looking for base-building or meaningful defense placement will find those verbs are largely absent. What you actually have is a slow, wave-survival shooter with exploration sprinkled around its edges, and there is nothing wrong with that per se, except that the pacing can drag before the weapon variety opens up. The production is appropriately micro. The 50MB install size tells you everything about scope. The art carries a minimalist, stylized quality that reads as deliberate rather than rushed, and the Martian atmosphere has a quiet, dark mood that suits the isolation premise. Controls are barebones enough that the community had to crowdsource them (WASD and J, if you need it), and there is no fullscreen option as of last check, which is a practical irritant that punches above its weight in terms of immersion damage. These are the rough edges you accept when a solo developer ships something this small and this cheap. Who is this for? Honestly, curious players who want to spend under five dollars on something genuinely handcrafted, strange, and imperfect. It is not the hybrid genre mashup it advertises. It is a scrappy little survival shooter with a lonely red-planet atmosphere and some rough mechanical edges that a bigger budget would have sanded down. The roughly 83% positive review ratio on Steam suggests that people who go in with calibrated expectations tend to find something likeable inside. I believe them. I just think the calibration is doing a lot of work. Kai, Scout Team

Alone on Mars

Alone on Mars

Aug 30, 2021Gnelf
GamerScout Says

A micro-budget 2D survival shooter with tower-defense bones that costs less than a coffee, but honesty demands you know what you're actually getting before you click.

PC
Best Price Available
€0.66
at Kinguin
Lowest tracked: €0.66
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GamerScout Verdict

Worth the asking price for bargain-hunters who want a scrappy solo-dev survival shooter, but skip if you need real sandbox or tower-defense depth.

Compare Prices(3 stores)

KinguinBest price
StandardGlobalSteam KeyKey
€0.66
Priced in EUR by the store
Buy
StandardGlobalSteam KeyKey
€0.91-77%
Priced in EUR by the store
Buy
StandardEurope (EU)Steam KeyKey
€1.79
Priced in EUR by the store
Buy
StandardEurope (EU)Steam KeyKey
€3.99
Priced in EUR by the store
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Price History

Lowest tracked
€0.6626 Jun 2026
Current best
€0.66
Lowest since we started tracking
Keyshops
€0.53€0.98€1.44€1.897 Jun30 Jun23 Jul14 Aug6 Sept
7 Jun — 6 Sept
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About Alone on Mars

I went in with low expectations and still came out with mixed feelings, which is its own kind of achievement. Gnelf's solo-developed Alone on Mars pitches itself as a 2D side-scrolling platformer fused with sandbox freedom and tower-defense structure. You respond to an SOS signal from Mars, land amid alien-overrun space stations, and your core job is to defend a generator while pushing outward through hostile environments and gradually unlocking new weapons. The premise is thin but functional, the kind of sci-fi skeleton that a small game can absolutely get away with if the moment-to-moment play holds up. On that front, the results are uneven. The generator-defense loop is the clearest idea here, giving each encounter a focal point that keeps the round-based structure from feeling completely formless. Weapon unlocks add a small dopamine tick when they land, and some guns fire multiple rounds in patterns that demand you actually learn their behavior rather than just spray. That small layer of mastery is genuinely interesting. What hurts the game is that the sandbox and tower-defense promises feel more like marketing shorthand than implemented systems. Players looking for base-building or meaningful defense placement will find those verbs are largely absent. What you actually have is a slow, wave-survival shooter with exploration sprinkled around its edges, and there is nothing wrong with that per se, except that the pacing can drag before the weapon variety opens up. The production is appropriately micro. The 50MB install size tells you everything about scope. The art carries a minimalist, stylized quality that reads as deliberate rather than rushed, and the Martian atmosphere has a quiet, dark mood that suits the isolation premise. Controls are barebones enough that the community had to crowdsource them (WASD and J, if you need it), and there is no fullscreen option as of last check, which is a practical irritant that punches above its weight in terms of immersion damage. These are the rough edges you accept when a solo developer ships something this small and this cheap. Who is this for? Honestly, curious players who want to spend under five dollars on something genuinely handcrafted, strange, and imperfect. It is not the hybrid genre mashup it advertises. It is a scrappy little survival shooter with a lonely red-planet atmosphere and some rough mechanical edges that a bigger budget would have sanded down. The roughly 83% positive review ratio on Steam suggests that people who go in with calibrated expectations tend to find something likeable inside. I believe them. I just think the calibration is doing a lot of work.

Kai
Kai · Scout Team

Indie & narrative

Tags

singleplayertier:sub-5Wave SurvivalGenerator DefenseSolo DeveloperMicro-BudgetWeapon Unlock ProgressionRound-Based

System Requirements

Minimum

OS
Windows XP and newer
Memory
512 MB RAM
Storage
500 MB available space
Graphics
Integrated Graphics
Processor
2.0+ GHz
Sound Card
Integrated Audio

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Game Info

Developer
Gnelf
Publisher
Gnelf
Release Date
Aug 30, 2021

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Frequently asked questions about Alone on Mars

How much does Alone on Mars cost?

As of 6 September 2026, the cheapest in-stock offer for Alone on Mars is €0.66 at Kinguin, out of 4 live offers we track across verified key stores. Prices change daily — the table on this page is refreshed continuously.

Where can I buy Alone on Mars cheapest?

The lowest in-stock price we track for Alone on Mars is €0.66 at Kinguin (6 September 2026). We compare 4 live offers from verified key stores — the full table with every store and its trust score is on this page.

What platforms is Alone on Mars available on?

Alone on Mars is available on PC.

When was Alone on Mars released?

Alone on Mars was released on 30 August 2021.

Who developed Alone on Mars?

Alone on Mars was developed by Gnelf.