# Aokana - Four Rhythms Across the Blue - EXTRA2

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

- Steam appid: 2206340
- Developer: sprite
- Publisher: NekoNyan Ltd.
- Released: 2022 · Genre: Adventure · List price: $24.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.5k to $2.3k per month (mid $1.9k)
- Opportunity score: $4.0k/month at x2.10 dormancy multiplier
- Est. lifetime owners: 44.4k · Est. lifetime net revenue: $276.6k
- Review sentiment: 99% positive across 2091 reviews (1387 from Steam purchases)
- Review velocity: 12.3 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 2.5 years
- Studio quiet across its whole catalog
- Last build shipped 3.7 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 | $3.5k |
| After VAT / sales tax (-13% blended) | $3.0k |
| After refunds (-9.5% median) | $2.7k |
| Net to developer (after Steam 30%) | $1.9k |

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

23, 16, 18, 15, 29, 17, 18, 23, 23, 17, 18, 21, 13, 18, 14, 15, 19, 16, 18, 8, 10, 11, 10, 17

## 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 +$1.2k 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

$46.1k to $92.2k (2-4x the trailing net annuity of $23.1k/year). Same error range applies.

## Markets by review language

- french: 0% (game NOT localized in this language)
- german: 0% (game NOT localized in this language)
- english: 15%
- russian: 0% (game NOT localized in this language)
- japanese: 0%
- brazilian: 0% (game NOT localized in this language)
- koreana: 1% (game NOT localized in this language)
- spanish: 0% (game NOT localized in this language)
- schinese: 83%

## Analyst notes (AI-assisted)

Aokana - Four Rhythms Across the Blue - EXTRA2 is a visual novel sequel set in a sky-diving sport universe, targeting fans of character-driven narrative games.

This title sits in a narrow but loyal niche: anime-style visual novels with strong community attachment and sustained Chinese-language demand (1,012 Chinese reviews). At $1.9K/mo residual revenue against $276K lifetime net, the game generates modest but stable income with minimal maintenance burden. The title is interesting primarily for publishers exploring Asian catalog depth or developers considering IP licensing to mobile/console platforms; standalone acquisition offers limited upside unless bundled with the franchise's prior entries.

- Most realistic play: licensing
- Risk (market): Niche audience (visual novels) with high concentration in Chinese-speaking regions; low mainstream Western appeal limits expansion vectors.
- Risk (other): Developer studio status marked as fading with 30+ months since last communication; support and update capacity unclear.
- Risk (tech): Game is 44 months old with no recent content updates; tech refresh may be required for console or mobile ports.

What players are asking for:
- EXTRA 3 continuation (explicit request in sample reviews)
- Console port (implied by franchise strategy)
- Mobile version or spinoff

Suggested first moves:
1. Audit IP rights and franchise architecture: confirm whether NekoNyan holds full control of Aokana IP or if any co-publishing/character rights exist that would block licensing deals.
2. Model mobile visual-novel ports in Asian markets (Southeast Asia, Korea) where anime VN adoption is proven; Chinese audience volume suggests strong monetization potential via Chinese platforms.
3. Contact developer to assess willingness to license IP or provide minimal maintenance support; 30-month silence suggests low cost of engagement or acquisition, but clarity on future support is essential before committing.

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/2206340
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.