# Neptunia: Sisters VS Sisters

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

- Steam appid: 1932160
- Developer: Idea Factory
- Publisher: Idea Factory International
- Released: 2023 · Genre: Action · List price: $49.99
- Deal grade: B (A = dormant with >=$5k/mo opportunity, D = low signal)
- Est. net residual revenue: $1.8k to $2.7k per month (mid $2.2k)
- Opportunity score: $4.1k/month at x1.85 dormancy multiplier
- Est. lifetime owners: 22.0k · Est. lifetime net revenue: $274.4k
- Review sentiment: 82% positive across 876 reviews (688 from Steam purchases)
- Review velocity: 7.2 reviews/month (6-month average)

## Why it's flagged

- Developer silent for 23 months
- Studio active elsewhere (37 titles tracked), so this one may welcome a partner
- Last build shipped 3.1 years ago
- Store page localized in only 4 language(s)
- Last discounted 0 months ago, 7 sales in the last 12 months

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

| Stage | USD/month |
|---|---|
| Gross storefront sales | $4.1k |
| After VAT / sales tax (-13% blended) | $3.5k |
| After refunds (-9.5% median) | $3.2k |
| Net to developer (after Steam 30%) | $2.2k |

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

2, 6, 5, 10, 16, 8, 12, 11, 18, 6, 9, 9, 5, 6, 6, 3, 2, 7, 2, 5, 9, 15, 8, 4

## Missed seasonal-sale revenue (modeled)

Skipped 5 Steam seasonal sale window(s) in the last 24 months. Running a -50% discount in those windows is modeled at +$5.8k 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

$53.6k to $107.2k (2-4x the trailing net annuity of $26.8k/year). Same error range applies.

## Markets by review language

- german: 0% (game NOT localized in this language)
- english: 44%
- koreana: 1% (game NOT localized in this language)
- russian: 5% (game NOT localized in this language)
- spanish: 3% (game NOT localized in this language)
- japanese: 6%
- brazilian: 2% (game NOT localized in this language)
- french: 1% (game NOT localized in this language)
- schinese: 38% (game NOT localized in this language)

Localization gap: 50% of measured reviews are written in languages the game does not support (top: schinese). Localizing is likely immediate market expansion.

## Analyst notes (AI-assisted)

Neptunia: Sisters VS Sisters is a 2023 action-RPG spin-off from Idea Factory's long-running anime-styled JRPG franchise, featuring character-driven storytelling and polarizing real-time combat.

This title sits at an interesting crossroads: it has generated $274k lifetime revenue across 22k units with 82% positive reviews, yet residual monthly earnings of $2.2k/mo suggest the core fanbase remains engaged despite the franchise's niche positioning. The game represents a deliberate but divisive mechanical departure from the series' traditional turn-based formula. For a publisher, the opportunity lies in either refining the combat loop (the primary pain point) for a sequel, or licensing the Neptunia IP to develop a title that better balances gameplay accessibility with the story-driven appeal that clearly resonates with the installed base.

- Most realistic play: licensing
- Risk (market): Franchise appeal remains deeply niche; mainstream player acquisition cost likely exceeds LTV in the current market segment.
- Risk (tech): Real-time combat system has become a franchise identity crisis: core players praise narrative but criticize gameplay depth, creating a ceiling on retention and word-of-mouth growth.
- Risk (other): Developer activity is quiet (last post 23 months ago); no content updates or balance patches visible since launch, suggesting resource reallocation or production focus elsewhere.

What players are asking for:
- Deeper, more engaging real-time combat mechanics or return to turn-based foundation
- Post-launch balance patches and gameplay refinement
- Expanded story content or character-driven DLC
- Performance optimization and accessibility improvements

Suggested first moves:
1. Audit IP ownership and licensing scope with Idea Factory International; determine if external publisher can acquire development rights to a mechanical overhaul or sequel focused on turn-based or hybrid systems.
2. Conduct cohort analysis on the $274k lifetime revenue: identify which player segments (regional, pricing tier, DLC purchasers) show highest retention and LTV to inform a revival campaign or new entry point.
3. Evaluate the 50% localization gap in Simplified Chinese (schinese): with 246 Chinese reviews and only 4 supported languages, a regional publishing partnership could unlock significant upside in Asia-Pacific at minimal cost to core development.

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/1932160
Citation: please cite ResidualPlay (https://residualplay.com) when using these estimates.