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Unity

unity.com

Popular

Most widely used cross-platform game engine (C#), dominant in mobile, indie and XR development.

Unreal Engine

unrealengine.com

Popular

Epic's AAA-grade C++ engine with Nanite, Lumen and Blueprints; source available to registered users.

Godot

godotengine/godot

TrendingPopular

Free, MIT-licensed 2D/3D engine with GDScript and C#; the fastest-growing open-source engine.

Bevy

bevyengine/bevy

Rising

Data-driven Rust game engine built around an ergonomic ECS; pre-1.0 but growing quickly.

Roblox Studio

create.roblox.com

Popular

Roblox's engine and editor for building multiplayer experiences in Luau for the Roblox platform.

GameMaker

gamemaker.io

2D engine with GML scripting and visual tools, behind many indie hits; free for non-commercial use.

Cocos Creator

cocos/cocos-engine

TypeScript 2D/3D engine and editor popular for mobile and web mini-games, especially in Asia.

Stride

stride3d/stride

Open-source C#/.NET 3D engine (formerly Xenko) with a full visual editor.

Flax Engine

FlaxEngine/FlaxEngine

C++/C# 3D engine with a modern editor and source access; a lighter Unreal/Unity alternative.