9th Sentinel Sisters

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9th Sentinel Sisters

Short description

The battle of the clone girls unfolds on a post-apocalyptic Earth, devastated by the alien life form known as "Bleed." Pilot the manned weapon "Father" to eliminate enemies. Upgrade weapons, create powerful builds, and strategize to successfully clear stages.

Developer
Live Wire
Publisher
Live Wire
Release
Wed, Sep 10, 2025
Price
$7.99
Reviews
273
Positive
69%
Followers
1,192
Owners (estimated)
50K – 100K
Concurrent players
n/a
Genres
Action, Casual, Indie
Features
Full controller support
Tags
Early Access Rogue-lite Action Hack and Slash Post-apocalyptic Dark Female Protagonist Futuristic Choices Matter Atmospheric Twin Stick Shooter Controller 2.5D Action Roguelike Sci-fi Hand-drawn Aliens Dystopian Mechs Singleplayer
Revenue (estimated, gross)~$98ksomewhere between $44k and $799k · roughly 5K–100K copies

Review count and SteamSpy's owner range disagree, so the band is widened to cover both rather than picking a favourite. Multiplied by the $7.99 launch price — there is not enough price history for this game to weight the copies by what they actually sold for. Before Steam's cut, VAT and refunds. How these numbers are calculated.

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History

2 data points since Aug 13, 2026. Gaps mean nothing changed — the value carries forward.

Revenue (est.) ~$98k → ~$98k
Reviews 273 → 273
Price $7.99 → $7.99
Positive reviews 69.2% → 69.2%

The revenue curve is an estimate, not a measurement. It is the only calculated series here: each interval takes the review growth of that period, multiplies it by the sales-per-review factor and by the price actually charged at the time, and adds the result to the running total. That is why it climbs more slowly through discount periods than the review curve next to it. The last point is the same figure quoted above — gross, before Steam's cut, VAT and refunds. How these numbers are calculated.

The blurred area is the rest of the history. 41 further data points reach back to Oct 1, 2023 — your plan shows the last 90 days of it. How far each series in particular reaches is written on its own chart; not every one of them goes back that far. The shape in the blurred area is decoration, not data: the figures are not in this page at all. Plus unlocks the complete series.

Lowest recorded price: $3.19 on Jun 25, 2026.

How crowded is this niche?

How full the niche around 9th Sentinel Sisters is — measured on the tags it leads with, against every other combination on Steam.

±?? Early Access + Rogue-lite + Action

Combinations under 15 games are left out to reduce the influence of small samples. The games below share those tags and are free to browse.

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Similar games that found an audience

Games sharing at least 3 of this title's leading tags, with enough reviews to have gone somewhere. Ranked by how much they overlap, not by how big they are. − missing and + extra mark the tags each one does not share with 9th Sentinel Sisters. Studio counts the titles that developer has released — the closest thing to production scale that public data allows. It is not a budget, and nobody publishes those.

Image Name Studio Shared Tag difference Price Reviews Positive Released Revenue (estimated)
Hades Hades Supergiant Games 5 titles 3 − Early Access − Post-apocalyptic − Dark + Action Roguelike + Indie + Mythology $24.99 287,247 98% Thu, Sep 17, 2020 $231m
$133m – $231m
Hades II Hades II Supergiant Games 5 titles 3 − Early Access − Post-apocalyptic − Dark + Rogue-like + RPG + Action Roguelike $29.99 115,189 96% Thu, Sep 25, 2025 $148m
$68.3m – $148m
Warhammer 40,000: Inquisitor - Martyr Warhammer 40,000: Inquisitor - Martyr NeocoreGames 14 titles 3 − Early Access − Rogue-lite − Post-apocalyptic + Action RPG + RPG + Loot $49.99 19,579 76% Tue, Jun 05, 2018 $44.7m
$44.7m – $70m
Windblown Windblown Motion Twin 2 titles 3 − Rogue-lite − Post-apocalyptic − Dark + Action Roguelike + Indie + Rogue-like $24.99 9,115 89% Thu, Oct 24, 2024 $8.9m
$4.4m – $10.9m
Darksiders Darksiders Vigil Games 3 titles 3 − Early Access − Rogue-lite − Dark + Adventure + Third Person + Singleplayer n/a 8,536 89% Thu, Sep 23, 2010 n/a

There are more like this. Your plan shows the 5 closest neighbours; Plus and Pro show up to 100 — enough to see the shape of a niche instead of a sample of it.

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