Those are Haxe 4 compatible game engines

• Armory (Kha) - An open-source 3D game engine with full Blender integration (Web, Mobile, Desktop, Consoles).
• Away3D - An open source, real-time 3D engine for OpenFL (Web, Mobile, Desktop).
• ceramic - Cross-platform 2D framework (Web, Mobile, Desktop, Unity).
• HaxeFlixel (OpenFL) - Free, cross-platform 2D game engine powered by OpenFL (Web, Mobile, Desktop, Consoles).
• Haxegon (OpenFL) - A programming library for beginners. Powered by OpenFL and Starling (Web, Mobile, Desktop, Consoles).
• Heaps - High Performance Game Framework (Web, Mobile, Desktop, Consoles).
• hxdefold - Haxe/Lua externs for Defold game engine (Web, Mobile, Desktop).
• OpenFL - Interactive game and app development library (Web, Mobile, Desktop, Consoles).
• Starling - The "Cross-Platform Game Engine", a popular Stage3D framework (Web, Mobile, Desktop).
• Stencyl (OpenFL) - Create Flash, HTML5, iOS, Android, and desktop games with no code (Mobile, Desktop).
• unreal.hx - Haxe Integration for Unreal (Web, Mobile, Desktop, Consoles).
• HxGodot (Godot 4.0) - A Haxe GDExtension for Godot 4 (Web, Mobile, Desktop, Consoles).

• Kha - Ultra-portable, high performance, open source multimedia framework (Web, Mobile, Desktop, Consoles).
• Lime - A flexible, lightweight layer for Haxe cross-platform developers (Web, Mobile, Desktop).
• linc_glfw - Desktop - GLFW binding (multi-platform library for OpenGL, OpenGL ES and Vulkan) (Desktop).
• NME - A cross-platform native backend (Web, Mobile, Desktop).
• 3DSHaxe - Make 3ds homebrew! (3DS).

• echo - Simple Physics Library.
• haxebullet - Bullet 3D Physics.
• nape-haxe4 - Physics Engine (the original Haxe3 version of nape can be found here).

IoC == Inversion of Control  
EC == Entity Component  
ECS == Entity-Component-System
FSM == Finite State Machine
MVC == Model View Controller

• awe6 - IoC, EC - The inverted game framework, is a development tool focused on Future Proofing.
• ecx - ECS - An Entity Component System framework.
• hexMachina - MVC - A powerful multi-modular MVC framework.
• OSIS - ECS - Entity Component System architecture with networking support.

• Anette - Simple network library (no UDP).
• colyseus-hx - Multiplayer Game Client.
• haxe-simple-peer (js) - Haxe externs for simple-peer.
• hxWebSockets - Websockets for all platforms.
• Built-in - Heaps, OpenFL (HaxeFlixel & co), Kha (Armory).

• Bits - Binary bit flags with unlimited amount of bits.
• CastleDB - A structured static database easing collaboration.
• hxbit - A binary serialization and network synchronization library.
• PODStream - Plain Old Data serializer.

• Darksburg - Heaps - Desktop.
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• Dead Cells - Heaps - Desktop, Consoles.
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• Defender's Quest - HaxeFlixel (OpenFL) - Desktop, Consoles.
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• Defender's Quest 2 - HaxeFlixel (OpenFL) - Desktop.
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• Dicey Dungeons - Haxegon (OpenFL) - Desktop, Consoles.
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• Evoland - Heaps - Desktop, Mobile.
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• Northgard - Heaps - Desktop.
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• Papers, Please - OpenFL - Desktop, iOS, PsVita.
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• Pocket Kingdom - HaxePunk (OpenFL)- Desktop.
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• rymdkapsel - OpenFL - Desktop, Mobile.
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• Spellbreak - unreal.hx - PC, PS, Xbox, Switch.
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• The Westport Independent - Luxe - Desktop, Mobile.
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More showcase :

• OpenFL showcase
• HaxeFlixel showcase
• itch.io showcase
• HaxePunk showcase
• Flambe showcase
• Kha showcase

• SteamWrap - Native extension for the SteamAPI.
• newgrounds - Newgrounds API.
• hxgamejolt-api - Haxe bindings for GameJolt API.

goap - Goal-oriented action planner for AI.

• spine-hx - Spine runtime automatically converted from the official Java/libgdx runtime.
• HaxeFlixel - Spine parser.
• Heaps-Spine - Spine player for heaps.
• heaps-aseprite - Load and render sprites and animations in Aseprite format.
• openfl-aseprite - Load and render sprites and animations in Aseprite format.
• openfl-spine - Render Spine animation in the OpenFL engine, rendering processing can be achieved throughSprite and Tilemap.
• ase - File format reader/writer for .ase/.aseprite without external dependencies.
• flxgif - Yagp's Gif Player for HaxeFlixel.

• sfxr-hx - Pure haxe implementation of Sfxr.

• nxColor - Color manipulation library.

• differ - A separation axis theorem collision library.

• Vision - Cross platform computer vision library.

• polygonal-ds - Data structures for games.

• hxyarn - Parser and runner for Yarn dialogue files.

• flixel-studio - In-game editor for HaxeFlixel.

• deepnightLibs - General gamedev purpose libs.

• firetongue - A translation/localization framework.

• PyxelEdit Map Importer - Parser for maps generated by the editor PyxelEdit.
• Heaps - Built-in parser for Tiled.
• HaxeFlixel - Parser for Tiled & Ogmo.
• LEd - 2D level editor with a typed compile time loader.
• TiledHX - A comprehensive modern Tiled parser.

• hxmath - A game-oriented math library.
• haxe-glm - A toolset for using 2, 3, and 4 dimensional vectors and matrices, as well as quaternions.
• hx-vector2d - Worlds most complete Vector2d / Point class. With operator overloading.

• polymod - An atomic modding framework for games/apps.

• Sparkler - Modular Particle System.

• extension-iap - Provides an access to in-app purchases (iOS) and in-app billing (Android) for OpenFL projects using a common API. Fork of this.

• pathfinder - Easy A* pathfinding algorithm.
• astar - Versatile framework-agnostic A-star solver Library.

• Dungeon builder - A set of dungeon generation algorithm (works w/ hx4 w/ minor changes).

• HGSL - Haxe to GL Shading Language.
• parasol - HaxeFlixel library of shaders.

• haxe-aseprite - Parser for .ase and .aseprite files.

• hxpk - Port of the libGDX Texture Packer.

• actuate - A flexible, fast "tween" library.
• YATL - Yet Another (Haxe) Tweening Library.
• TweenX/TweenXCore - Tween library.

• domkit - CSS Components based strictly typed UI framework.
• flixel-ui - GUI library for HaxeFlixel.
• HaxeUI - UI library with multiple framework backends (HTML5, Kha, OpenFL, PixiJS, WxWidgets, and a number of others as works in progress).
• Feathers UI - Cross-platform graphical user interface components for creative frontend projects.

• hxCodec - Adds native video playback on HaxeFlixel and OpenFL.

• Flash is dead, long live OpenFL!
• Flash is gone, what now?
• How I wrote my own 3D game engine and shipped a game with it in 20 months
• Building 42 games within a year — Insane game development
• Porting to console via Unity

• awesome haxe
• awesome snowkit
• awesome haxe js