Black Deck – Card Battle CCG

Client Overview

Game Intro
Black Deck is an epic turn-based collectible card game that blends the accessibility of hyper-casual titles with deep progression mechanics. Players collect heroes to battle in a fantasy world, featuring a rich single-player campaign and competitive PvP. It is designed to be “easy to learn but hard to master,” requiring strategic deck-building to defeat increasingly difficult AI and human opponents.
Business Requirements
The client needed to launch a complex, event-driven title on Android and iOS without technical friction. They required a QA partner to cover the full spectrum of quality risks, among which are functionality, stability, performance and compatibility.
Platform
- Android
- iOS

Engagement

4 QA specialists
Purpose: All-round testing cycles to deliver end-to-end quality assurance that ensures the technical stability and monetization integrity required for a massive global launch.

Solutions

Functional Testing
Verify core gameplay loops and ensure frequent events launch and function without errors.
Monetization & Ad Integrity
Validate the logic of special offers, in-app purchases, and ad placements to protect revenue streams.
Performance & Compatibility
Guarantee smooth performance (fps/memory) across a strategic selection of market-relevant devices, ensuring broad coverage.
Platform testing
Verifying the game functions on a strategic selection of iOS and Android devices (covering various screen sizes and OS versions).
Exploratory Testing
Going beyond scripted test cases to uncover edge-case bugs, usability issues, and “real-world” user behaviors that structured testing might miss.
Regression Testing
Rigorous re-testing of existing mechanics with every update to ensure that frequent “Live Ops” content drops and bug fixes do not break previously working features.

Business Impact / Benefits Delivered

High Stability
The QA team ensured a highly stable build during various development phases. By identifying and resolving critical logic and blockers early, the client was able to validate metrics and confidently scale user acquisition without technical debt holding them back.
Cross-Platform Experience
Rigorous compatibility testing ensured a seamless experience across both Android and iOS ecosystems. The game performs consistently on a wide range of hardware, from older budget phones to high-end flagship devices, maximizing the game’s potential audience reach.
Positive Player Reception
The game maintains a strong 4.3+ star rating on app stores. The lack of crashes and visual glitches contributed to a polished “premium” feel, which is essential for retaining mid-core players who are sensitive to quality issues.
Commercial Success
The game successfully scaled to 6.8 million installs.