Unity Developer Interview Questions

824 unity developer interview questions shared by candidates

You have 20 bags of coins. One of the bags contains counterfeit coins. A regular coin weighs exactly 1 gram, while each counterfeit coin weighs 1.1 grams. You are allowed to use a scale only once. How would you determine which bag contains the counterfeit coins in a single weighing?
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Unity Developer

Interviewed at SciPlay

3.7
Aug 26, 2025

You have 20 bags of coins. One of the bags contains counterfeit coins. A regular coin weighs exactly 1 gram, while each counterfeit coin weighs 1.1 grams. You are allowed to use a scale only once. How would you determine which bag contains the counterfeit coins in a single weighing?

- SOLID principles - Design patterns - OOPS (4 pillars), inheritance, interface, abstract class - Interface, abstract class - Garbage collection, heap and stack - Unity lifecycle, AssetBundles, Addressables, Scripable Objects - Audio settings - Time stamps, FixedUpdate, Update, FPS, Draw call, Batching and Batching techniques - Resources vs StreamingAssets - Image vs RawImage - Question related to unity UI - UI optimisations techniques - Drawcall optimisations - FPS optimisations - Profiler and debugging - Script optimisation techniques - C# questions, generic in c#, ref vs out - Big o notation, lambda expressions, enum, access modifiers - Serialization - Few common Git questions in final round - 3 coding problems to solve in online test (not so difficult, average) - 1 coding problem is given to solve in final round (average) Overall interview consists of all aspects of game development. Unity, Optimisations, OOPS and C#.
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Senior Unity Developer

Interviewed at Product Madness

4
Aug 5, 2022

- SOLID principles - Design patterns - OOPS (4 pillars), inheritance, interface, abstract class - Interface, abstract class - Garbage collection, heap and stack - Unity lifecycle, AssetBundles, Addressables, Scripable Objects - Audio settings - Time stamps, FixedUpdate, Update, FPS, Draw call, Batching and Batching techniques - Resources vs StreamingAssets - Image vs RawImage - Question related to unity UI - UI optimisations techniques - Drawcall optimisations - FPS optimisations - Profiler and debugging - Script optimisation techniques - C# questions, generic in c#, ref vs out - Big o notation, lambda expressions, enum, access modifiers - Serialization - Few common Git questions in final round - 3 coding problems to solve in online test (not so difficult, average) - 1 coding problem is given to solve in final round (average) Overall interview consists of all aspects of game development. Unity, Optimisations, OOPS and C#.

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