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Action indie game Heartworm launched in 2025 from developer vincent-adinolfi and publisher DreadXP. It has 428 Steam reviews marked mixed and an initial price of $14.99, giving buyers clear signals on scale, reception, and cost.
Overview
Heartworm is a 2025 Action game developed by Vincent Adinolfi and published by DreadXP. On Steam it has gathered 433 player reviews, 86% of them positive, which counts as a very positive reception among indie titles in the Action category. The game is available on windows, and launched at $15. The pairing of developer Vincent Adinolfi with publisher DreadXP 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 13,000 to 30,000 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, Heartworm can be compared against similar Action titles and benchmarked on review counts and estimated sales.
Reviews
433
Positive
86%
Steam appid
1257030
Engine
Unknown
Players (snapshot)
Unavailable
Sales estimate
v1.013K to 30K
units (median: 22K)
≈ $111K to $260K modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2025 | -10 |
| price_$15 | 0 |
| positive_86% | +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 Heartworm at roughly 13,000 to 30,000 copies, with a median around 22,000, derived from its 433 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $185K 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
8 observed days · window low $14.99Across 8 observed UTC days from 2026-07-15 to 2026-07-22, the daily lowest tracked USD price across stores ranged from $14.99 to $14.99. The tracked-window low was $14.99 on 2026-07-15.
Real store observations · daily lowest tracked USD price across stores · missing days are not filled.
Where to buy
Affiliate disclosure- Steam reference$14.99 Buy
- Green Man Gaming
- Fanatical
- Humble Store
- GOG.com
Latest tracked store observations (2026-07-22 20:30 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
windows
Frequently asked questions
- How many copies has Heartworm sold?
- indielist estimates Heartworm has sold between 12,990 and 30,310 units (median 21,650), derived from its 433 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
- Who developed Heartworm?
- Heartworm was developed by Vincent Adinolfi and published by DreadXP.
- Who published Heartworm?
- Heartworm was published by DreadXP, developed by Vincent Adinolfi. See DreadXP's full catalogue and submission status on indielist.
- When was Heartworm released?
- Heartworm was released in 2025.
- How many reviews does Heartworm have on Steam?
- Heartworm has 433 Steam reviews, of which 86% are positive.
- Is Heartworm worth playing?
- Steam players rate Heartworm 86% positive across 433 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 Heartworm 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, Vincent Adinolfi's other releases and DreadXP's wider catalog are one click away, letting developers benchmark where Heartworm 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 Heartworm 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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