# Tangle Tower

> ResidualPlay case file: an overlooked Steam game still earning residual revenue. Estimates carry a ±30-50% error range per title.

- Steam appid: 359510
- Developer: SFB Games
- Released: 2019 · Genre: Adventure · List price: $19.99
- Deal grade: A (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $9.8k to $14.8k per month (mid $12.3k)
- Opportunity score: $16.0k/month at x1.30 dormancy multiplier
- Est. lifetime owners: 251.8k · Est. lifetime net revenue: $1.1M
- Review sentiment: 95% positive across 6607 reviews (6296 from Steam purchases)
- Review velocity: 114.5 reviews/month (6-month average)

## Why it's flagged

- Developer active, last post 1 months ago
- Studio active elsewhere (5 titles tracked), so this one may welcome a partner
- Last build shipped 35 months ago

## Where a gross dollar goes (monthly, at current velocity)

| Stage | USD/month |
|---|---|
| Gross storefront sales | $22.3k |
| After VAT / sales tax (-13% blended) | $19.4k |
| After refunds (-9.5% median) | $17.6k |
| Net to developer (after Steam 30%) | $12.3k |

## Monthly review counts, oldest to newest (24 months)

89, 74, 39, 40, 68, 53, 30, 117, 33, 38, 137, 90, 87, 51, 58, 68, 51, 110, 57, 77, 68, 57, 106, 322

## Estimated acquisition range

$295.2k to $590.4k (2-4x the trailing net annuity of $147.6k/year). Same error range applies.

## Analyst notes (AI-assisted)

A charming point-and-click murder mystery adventure with cozy detective vibes, strong voice acting, and hand-crafted character animation that grossed $1.08M lifetime.

Tangle Tower sits in a quiet niche: a 2019 indie detective game that earned $12.3k/mo residual revenue with 95% positive reviews and 114.5 reviews/month on Steam alone, yet operates below mainstream visibility. The sequel (The Mermaid Mask) has already launched, creating a franchise context that makes the original either a catalog anchor for a publishing house targeting the cozy-puzzle demographic or a revival candidate if SFB Games seeks to re-market both titles together. Core risk is narrative: recurring feedback on an ending that feels rushed and logically inconsistent, which limits organic word-of-mouth and replayability.

- Most realistic play: publishing
- Risk (market): Plot-twist ending divides players and undercuts replayability; negative reviews cite plot holes and character motivation lapses that erode the mystery's core value proposition.
- Risk (other): Sequel already exists and is live; any revival campaign must position original as entry point, not as standalone property with growth potential.
- Risk (tech): Last developer post 1.1 months ago suggests maintenance mode; no active roadmap or content updates signal dormancy despite operating studio status.

What players are asking for:
- Tighter ending logic and character-motivation justification (why did the killer act as they did)
- Extended playtime and puzzle depth for the $19.99 price point (complaints cite 5-6 hour run time as short for cost)
- More games in the same style and setting (clear appetite for franchise expansion)

Suggested first moves:
1. Audit the ending narrative and consider a director's commentary or optional epilogue that addresses logical inconsistencies; frame it as clarification, not retcon, to show respect for criticism.
2. Bundle original + sequel at a discount and relaunch as a franchise package on Steam homepage, GOG, and console marketplaces (Nintendo Switch traction is evident from reviews); capitalize on The Mermaid Mask's release momentum.
3. Explore translation and regional marketing in underserved languages (currently 14 supported); cozy detective games perform well in Asian markets (Professor Layton legacy noted in reviews).

Generated 2026-08-20 from public signals and player reviews. Directional, not diligence.

## Methodology

Units are estimated from Steam-purchase reviews times a release-cohort multiplier (Boxleiter method, 20-75x by year). Revenue uses an effective price (lifetime discounts and regional pricing) and nets out VAT (~13%), refunds (~9.5%) and Steam's 30% cut: roughly 55% of gross reaches the developer.

Source: https://residualplay.com/game/359510
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.