# Aokana - Four Rhythms Across the Blue - EXTRA1

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

- Steam appid: 1340130
- Developer: sprite
- Publisher: NekoNyan Ltd.
- Released: 2020 · Genre: Adventure · List price: $16.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $816 to $1.2k per month (mid $1.0k)
- Opportunity score: $2.1k/month at x2.10 dormancy multiplier
- Est. lifetime owners: 37.7k · Est. lifetime net revenue: $137.8k
- Review sentiment: 98% positive across 1720 reviews (1258 from Steam purchases)
- Review velocity: 11.2 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 2.5 years
- Studio quiet across its whole catalog
- Last build shipped 5.6 years ago
- Store page localized in only 4 language(s)
- Last discounted 1 months ago, 8 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $1.9k |
| After VAT / sales tax (-13% blended) | $1.6k |
| After refunds (-9.5% median) | $1.5k |
| Net to developer (after Steam 30%) | $1.0k |

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

14, 7, 15, 15, 23, 18, 21, 10, 13, 7, 11, 13, 11, 12, 6, 8, 12, 10, 13, 11, 11, 12, 8, 12

## Missed seasonal-sale revenue (modeled)

Skipped 1 Steam seasonal sale window(s) in the last 24 months. Running a -50% discount in those windows is modeled at +$456 net in total, assuming a unit uplift of x3.0 (industry-typical for old catalog titles). Same ±30-50% error range applies.

## Estimated acquisition range

$24.5k to $48.9k (2-4x the trailing net annuity of $12.2k/year). Same error range applies.

## Analyst notes (AI-assisted)

Aokana - Four Rhythms Across the Blue - EXTRA1 is a visual-novel epilogue / fan-service continuation focused on the Mashiro route from the original Aokana title.

This is a niche but stable fandom extension earning $1,020/mo in residual revenue on a $16.99 price point, with exceptional review sentiment (98% positive) and steady low-velocity sales (~8 units per year). The opportunity lies not in growth but in catalog preservation: it generates modest but reliable income for a visual-novel publisher, and any buyer inheriting the Aokana franchise should retain this title to maintain fan goodwill and complete the story ecosystem.

- Most realistic play: acquisition
- Risk (market): Depends entirely on the installed base and active fandom of the original Aokana title; orphaned if the original falls out of discoverability or support.
- Risk (other): Developer studio Sprite is marked as fading (three titles only; last dev activity 30.5 months ago), so future patches, localization updates, or technical support may be unavailable.

What players are asking for:
- Confirmation that the patch / full version is optional (players unsure if additional content requires external files)

Suggested first moves:
1. Verify IP ownership and all underlying Aokana franchise rights before acquisition; ensure EXTRA1 can be bundled with or sold independently of the base game post-purchase.
2. Audit Sprite's fading status and technical debt: confirm whether the game runs on current Steam client versions and whether localization / patch infrastructure is transferable.
3. Evaluate bundling strategy if acquiring the full Aokana franchise: EXTRA1's $1,020/mo stream justifies inclusion in any revival or remaster campaign to maximize fan retention.

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/1340130
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.