The Seven Deadly Sins

The Seven Deadly Sins

By Netmarble

The Seven Deadly Sins: Grand Cross is a turn-based anime RPG for iOS and Android, structured around card-based combat and character collection.

The App DNA

What makes this app unique?

Users hire the app to relive the anime narrative in a high-fidelity 3D format, using the combat system to progress through original and exclusive story arcs.

For Fans of the Seven Deadly Sins anime and manga series who enjoy turn-based strategy RPGs and character collection.

What does it look like?

Key features

Strategic Skill Card Battle Systemedge

Combines skill cards of the same rank to increase card power and trigger Ultimate Moves during turn-based combat.

Game-Exclusive Outfitsedge

Customizable cosmetic looks for characters that are not present in the original anime source material.

Real-time Death Matchesstandard

Cooperative multiplayer mode requiring real-time coordination with friends to clear boss encounters.

How much does it cost?

freemiumFree-to-play with optional in-app purchasesIn-app purchases for currency, outfits, and character draws

Monetization relies on a gacha-based model where revenue is generated through character acquisition and cosmetic customization.

Velocity

Active developmentnew contentseasonal eventsmonetizationShow more...

The app maintains an active development cadence, averaging approximately 0.7 releases per week over the analyzed period. Development is heavily focused on live operations, including collaborations, new hero debuts, and seasonal anniversary events. The release strategy is consistent across iOS and Android platforms, with major content drops occurring roughly every 3-4 weeks. The current trend is stable, with a clear emphasis on recurring content cycles to drive user engagement.

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Who built it?

Netmarble

13+ apps tracked · Games

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User Sentiment

What do users think recently?

Recent user voice shows a frustrated sentiment. Users appreciate accurate anime story adaptation keeps long-term fans engaged with the core narrative experience, but report aggressive pay-to-win mechanics in pvp matchmaking alienate players who lack the latest meta characters.

How are ratings & reviews evolving?

Google Play
4.23 · 651k
App Store
4.72 · 144k

What users say, by theme

What Users Love
  • Accurate anime story adaptation keeps long-term fans engaged with the core narrative experience
What Frustrates Users
  • Aggressive pay-to-win mechanics in PvP matchmaking alienate players who lack the latest meta characters
+ 1 more theme
What Users Want 1 request inside

100 of 107 recent reviews analyzed · high confidence · Frustrated overall

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Unlock 1 more frustration theme and 1 user request, each backed by review evidence.

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Competition

Competitive landscape for The Seven Deadly Sins

How's the Games market?

The app maintains a presence in the US Grossing charts, though rank volatility suggests sensitivity to banner performance. The gap between its discovery advantage and revenue retention signals a need to rebalance the F2P progression path.

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The rivals identified

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The Analyst's Read

Key takeaways for The Seven Deadly Sins

Where is it heading?

The turn-based RPG market is consolidating around high-production-value titles, leaving the app exposed to technical and economic fatigue. Unless the team addresses the Android stability gap and F2P progression friction, the current sentiment decline will continue to erode the player base through the next quarter.

  • Technical instability in the latest release (crashes, loading loops) erodes the daily active habit, which compounds the rating drag already visible on Android.
  • Aggressive PvP meta-creep forces spending, which accelerates churn among long-term players who cannot keep up with the latest festival character passives.

The SWOT

Core Strengths
  • High-fidelity 3D anime visuals drive organic acquisition
  • Original story content provides a unique retention anchor
Critical Frictions 2 weaknesses inside
Growth Levers
  • Expansion of cooperative social features could mitigate gacha reliance
Market Threats 1 threat identified

Next best moves

1 Pivot · 1 Invest

Audit Android stability to close the 0.49★ rating gap because technical instability is a top complaint → improve retention

+ 1 more prioritized move

The counter-intuitive read

The app's reliance on aggressive monetization is not…

Read the full take

Feature gaps

Deep gear-grinding progression system (available in Epic Seven but absent here)

Since the last report: The report identifies a decline in user sentiment driven by technical instability and aggressive monetization, alongside a more rigorous competitive analysis of the turn-based RPG market.

Bottom line

The app retains fans through narrative fidelity but risks long-term churn due to technical instability and aggressive monetization, so the PM must prioritize Android stability and F2P economy rebalancing to stabilize the user base.

Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.

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Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by The Seven Deadly Sins, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

What's new

The report identifies a decline in user sentiment driven by technical instability and aggressive monetization, alongside a more rigorous competitive analysis of the turn-based RPG market.

declined

Sentiment and Stability

shifted

Market Outlook

improved

Skill Card Battle System Repositioning

added

New SWOT Weaknesses and Threats

Cite this report

Marlvel.ai. “The Seven Deadly Sins Intelligence Report.” Updated May 7, 2026. https://marlvel.ai/apps/com-netmarble-nanagb

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