Mustafa Kum — Gameplay & Performance Engineer

Versatile Gameplay & Performance Engineer with professional experience in Unity (C#) and a deep focus on Unreal Engine 5 (C++). I build responsive, polished gameplay systems and ship to iOS and WebGL. I've also created high-performance HTML5/JavaScript playable ads (bundles <1 MB, up to +15% CTR uplift).

📧 Email: kum.mustafa96@gmail.com
💼 LinkedIn: https://www.linkedin.com/in/mustafa-kum/
🎮 itch.io: https://kumdev.itch.io

🗺️ Navigate

🚀 Unreal Engine 5 · 🧩 Modular RPG Series · 🎮 Unity Shipped · 🎮 Unity Team Projects · 🎮 Unity Personal · ✨ Playable Ads · 🕹️ HTML5 Games

🛠️ Skills & Technologies

Category	Skills & Technologies
🛠️ Engines & Languages	Unity (C#), Unreal Engine 5 (C++), HTML5/JavaScript
⚔️ Gameplay & Systems	State machines, Combat, Modular Ability Systems (GAS/Tags), Skill Books, Cast Bars, BT/EQS AI, UI/HUD, Camera
✨ Animation & VFX	Animation Blueprints, Montages/Notifies, Retargeting, Niagara, DOTween, Cinemachine
⚙️ Optimization	Unreal Insights/`STAT`, Async asset streaming, Object pooling, Addressables, Profiling/GC
🚀 Release & Tools	iOS (TestFlight/App Store), WebGL, Playable Ads, Git (Perforce familiar)

🚀 Unreal Engine 5 Projects

🔥 Third-Person Action Game (UE5)

Personal project — Sole Developer

Personal project third-person combat and AI in UE5/C++ (inspired by God of War).

Architecture: C++ cancelable combo state machine; dodge, block, parry; two unique abilities
Enemy AI: Behavior Trees + Blackboard; EQS positioning; multi-phase boss encounter
Animation: Animation Blueprints, Montages/Notifies, root-motion, retargeting
VFX & Feel: Niagara effects; camera shake; hit-stops; time dilation; procedural feel
UI/Loop: Main menu, in-game HUD, settings; Arena Mode with wave spawner
Data & Perf: Curve Tables for tuning; SFX integration; continuous optimization
🎬 Gameplay Demo: https://youtu.be/8BcLFCZjd8s
💻 Repository: https://github.com/Mustafa-Kum/GodOfWarClone

⚔️ Modular GAS Weapon System (UE5)

Personal project — Sole Developer | Technical Showcase

Data-Driven, Component-Based Weapon System utilizing Unreal Engine's Gameplay Ability System (GAS). Decouples weapon logic from character classes using Interfaces and Data Assets. Features Input Buffering, Asynchronous Asset Loading, and Animation Notify driven state changes for a smooth, AAA-feel combat experience.

💻 Repository: https://github.com/Mustafa-Kum/UE-5.7.3-WeaponSystem-Equip-Unequip

🧩 Modular RPG Series (UE5)

A step-by-step AAA-style RPG architecture built in Unreal Engine 5 (C++).
Each part is a self-contained, production-quality module focused on clean architecture, GAS integration, and scalable design.

#	System	Highlights	Repository
1	Inventory & Equipment System	Event-driven UI · GAS buff/debuff via `FActiveGameplayEffectHandle` · CDO parsing for tooltips · Async loading via `StreamableManager` · Modular armor with `SetLeaderPoseComponent`	🔗 Repo
2	HP & Mana Vitals System	Reactive UI via GAS delegates · WoW/FFXIV-style trailing bars · Proportional stat scaling · `UCharacterDataAsset`-driven initialization	🔗 Repo
3	Melee Combat System	Combo chaining · Input buffering · Animation-driven combat windows · Reliable melee hit detection · Crit feedback · Hit stop · Pooled combat text	🔗 Repo
4	Ability System	GAS-based active/passive skills · Skill book + action bar · Cast bar · Cooldowns/costs · Dynamic tooltips · Haste-scaled cast timing · Animation-driven commit/cancel windows · AOE + airborne impact	🔗 Repo
6	Directional Dodge Roll System	Directional input handling · Animation-authored i-frames · Combat interruption rules · Smooth rotation restoration · Cooldown gating · Modular ownership	🔗 Repo
7	Enemy AI (Upcoming)	Behavior Trees + GAS integration	—
8	Advanced Stat System (Upcoming)	Buffs, debuffs, stacking	—

The Ability System module expands the RPG foundation with GAS-driven active/passive skills, animation-authored cast timing, stat-scaled damage, skill book/action bar UI, cooldown and resource handling, dynamic tooltips, and area-impact abilities such as Warcry and Shockwave.

🎮 Unity — Shipped Games

👾 Cubix Path (iOS) — Shipped

3-person team — Full-Stack Game Developer (gameplay, backend, UI/UX, optimization, release)

Puzzle game shipped to the App Store. Responsible for every technical layer of the product — core gameplay architecture, backend logic, UI/UX, and App Store release pipeline.

Water mechanic, responsive cube jiggle feedback
Full UI/HUD/menus and responsive layouts
Stable 60 FPS on target devices
🍎 App Store: https://apps.apple.com/tr/app/cubix-path-puzzle-match/id6478001225
🎬 Gameplay: https://www.youtube.com/watch?v=0eXOciigD3o
💻 Code: https://github.com/Mustafa-Kum/PuzzleCode

🚜 Farm Connect Match (iOS) — Shipped

3-person team — Full-Stack Game Developer (gameplay, backend, UI/UX, camera, optimization, release)

3D puzzle game shipped to the App Store. Owned the entire technical stack — mechanics, UI/UX, camera systems, mobile performance, and release pipeline.

Optimized 3D physics and memory management to maintain a stable 60 FPS on target iOS devices
🍎 App Store: https://apps.apple.com/us/app/farm-connect-match-3d-puzzle/id6503044105
🎬 Gameplay: https://www.youtube.com/watch?v=t4rGmqsmI0I
💻 Code: https://github.com/Mustafa-Kum/FarmPuzzleCode