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Action indie game SiNiSistar 2 comes from developer uu and publisher eroge-japan. Set for 2026, it lists a $14.99 initial price and has 2,269 Steam reviews with 91% positive sentiment, marked Very Positive.
Overview
SiNiSistar 2 is a 2026 Action game developed by Uu and published by Eroge Japan. On Steam it has gathered 2,961 player reviews, 91% of them positive, which counts as a very positive reception among indie titles in the Action category. The game is available on mac, windows, and launched at $15. The pairing of developer Uu with publisher Eroge Japan is one of the studio-publisher relationships indielist tracks, letting players find comparable games and letting developers and investors study how Action projects reach the market. indielist's white-box method estimates its lifetime sales at roughly 89,000 to 207,000 units, with the full Boxleiter factor breakdown shown on this page rather than a single black-box figure. Within indielist's catalog of indie games mapped to their studios, publishers, and funding, SiNiSistar 2 can be compared against similar Action titles and benchmarked on review counts and estimated sales.
Reviews
2,961
Positive
91%
Steam appid
4466620
Engine
Unknown
Players (snapshot)
Unavailable
Sales estimate
v1.089K to 207K
units (median: 148K)
≈ $761K to $1.8M modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2026 | -10 |
| price_$15 | 0 |
| positive_91% | +10 |
| final NB | 50 |
Heuristic display range: median × [0.6, 1.4]. Boundary protection: NB ∈ [15, 150].
Methodology & limitations
Sales estimates use an additive Boxleiter-derived heuristic against public Steam review
counts. They are not authoritative sales data, and the fixed display range
is not a statistically validated confidence interval. Actual results may fall outside it,
especially for deeply discounted or bundle-heavy titles. Algorithm version
v1.0. Read the exact method and validation status.
indielist estimates lifetime unit sales for SiNiSistar 2 at roughly 89,000 to 207,000 copies, with a median around 148,000, derived from its 2,961 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $1.3M in net revenue after Steam's 30% cut, regional pricing, and refunds. Unlike black-box trackers, the full calculation is shown on this page: a base review-to-sales multiplier is adjusted for release year, launch price, review sentiment, studio size, and genre, and every adjustment is listed so developers, publishers, and investors can audit exactly how the figure was reached. The range itself reflects genuine uncertainty — review-to-sales ratios vary widely between games — so indielist publishes a low, median, and high band rather than a false-precision single number, and treats free-to-play, heavily discounted, and bundle-distributed titles as having wider error margins still.
Price history
15 observed days · window low $11.99Across 15 observed UTC days from 2026-06-03 to 2026-07-22, the daily lowest tracked USD price across stores ranged from $11.99 to $14.99. The tracked-window low was $11.99 on 2026-07-15.
Real store observations · daily lowest tracked USD price across stores · missing days are not filled.
Where to buy
Affiliate disclosureLatest tracked store observations (2026-07-22 04:58 UTC), cheapest first. Prices may have changed since observation. Some are affiliate links — we may earn a commission at no extra cost to you. Learn more.
Platforms
macwindows
Frequently asked questions
- How many copies has SiNiSistar 2 sold?
- indielist estimates SiNiSistar 2 has sold between 88,830 and 207,270 units (median 148,050), derived from its 2,961 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
- Who developed SiNiSistar 2?
- SiNiSistar 2 was developed by Uu and published by Eroge Japan.
- Who published SiNiSistar 2?
- SiNiSistar 2 was published by Eroge Japan, developed by Uu. See Eroge Japan's full catalogue and submission status on indielist.
- When was SiNiSistar 2 released?
- SiNiSistar 2 was released in 2026.
- How many reviews does SiNiSistar 2 have on Steam?
- SiNiSistar 2 has 2,961 Steam reviews, of which 91% are positive.
- Is SiNiSistar 2 worth playing?
- Steam players rate SiNiSistar 2 91% positive across 2,961 reviews. indielist doesn't score games editorially; it surfaces public review sentiment and a white-box sales estimate so you can judge reception and reach yourself.
Ecosystem
Players looking for games like SiNiSistar 2 can compare it on indielist against semantically similar Action titles such as Rust, Terraria, Phasmophobia, ARK: Survival Evolved, ranked by shared tags and genre rather than by ad spend. On the developer side, Uu's other releases and Eroge Japan's wider catalog are one click away, letting developers benchmark where SiNiSistar 2 sits among a studio's body of work and how its publisher's portfolio performs. Because indielist maps studios, publishers, games, and funding into one connected graph, the same SiNiSistar 2 page serves three audiences at once: players hunting their next Action game, developers studying how comparable projects were positioned and what they sold, and investors tracing which teams and labels are active in the space. A machine-readable markdown mirror of this page is published at the same path with a .md suffix for AI assistants, and its review, price, and sales-estimate figures are refreshed on a schedule rather than frozen at launch.
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