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Action indie game Tower Fortress offers a budget-priced entry at $4.99. Released in 2017 by developer keybol and publisher nitrome, it has 145 Steam reviews with 92% positive, giving it an underrated profile for players browsing action games under $10.
Overview
Tower Fortress is a 2017 Action game developed by Keybol and published by Nitrome. On Steam it has gathered 146 player reviews, 92% 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 $5. The pairing of developer Keybol with publisher Nitrome 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 6,000 to 14,000 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, Tower Fortress can be compared against similar Action titles and benchmarked on review counts and estimated sales.
Reviews
146
Positive
92%
Steam appid
593700
Engine
Unknown
Players (snapshot)
Unavailable
Sales estimate
v1.06K to 14K
units (median: 10K)
≈ $17K to $41K modeled net revenue (fixed store-cut, refund, and regional-price assumptions applied)
+ - How is this calculated?
| Factor | Adjustment |
|---|---|
| base | +50 |
| year_2017 | +30 |
| price_$5 | -20 |
| positive_92% | +10 |
| final NB | 70 |
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 Tower Fortress at roughly 6,000 to 14,000 copies, with a median around 10,000, derived from its 146 Steam reviews using a multi-factor Boxleiter method (version v1.0). That median maps to approximately $29K 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 $4.99Across 15 observed UTC days from 2026-07-15 to 2026-09-04, the daily lowest tracked USD price across stores ranged from $4.99 to $4.99. The tracked-window low was $4.99 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$4.99 Buy
- Green Man Gaming
- Fanatical
- Humble Store
- GOG.com
Latest tracked store observations (2026-09-04 06:45 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 Tower Fortress sold?
- indielist estimates Tower Fortress has sold between 6,132 and 14,308 units (median 10,220), derived from its 146 Steam reviews with the white-box Boxleiter v1.0 method. The full breakdown is shown on the page.
- Who developed Tower Fortress?
- Tower Fortress was developed by Keybol and published by Nitrome.
- Who published Tower Fortress?
- Tower Fortress was published by Nitrome, developed by Keybol. See Nitrome's full catalogue and submission status on indielist.
- When was Tower Fortress released?
- Tower Fortress was released in 2017.
- How many reviews does Tower Fortress have on Steam?
- Tower Fortress has 146 Steam reviews, of which 92% are positive.
- Is Tower Fortress worth playing?
- Steam players rate Tower Fortress 92% positive across 146 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 Tower Fortress can compare it on indielist against semantically similar Action titles such as Terraria, Rust, Phasmophobia, The Forest, ranked by shared tags and genre rather than by ad spend. On the developer side, Keybol's other releases and Nitrome's wider catalog are one click away, letting developers benchmark where Tower Fortress 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 Tower Fortress 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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