Flixel Game Engine
Flixel is an open source game-making library that is completely free for personal or commercial use.
18 Alternatives To Flixel Game Engine
AppGameKit
AppGameKit is a game development platform for mobile devices.
ClickTeam Fusion
[Multimedia Fusion 2 has been replaced by Clickteam Fusion 2.5.]
Corona SDK
Cross-platform mobile app development.
FlashPunk
FlashPunk is a free ActionScript 3 library designed for developing 2D Flash games.
GDevelop
GDevelop is an open-source game making software designed to be used by everyone.
HaxeFlixel
Create cross-platform games easier and free. All with one codebase.
HaxePunk
HaxePunk is a 2d game engine written in Haxe for cross-platform deployment.
LOVE
Hi there! LÖVE is an awesome framework you can use to make 2D games in Lua.
Monkey X
Monkey is a modular language.
MonoGame
MonoGame is an open source implementation of the Microsoft XNA 4 Framework.
OpenFL
Build games and applications for almost every platform imaginable – Windows, Mac, Linux, iOS…
OutSystems
Build Enterprise-Grade Apps Fast.
Pygame
Pygame is a set of Python modules designed for writing games.
QICI Engine
Full-featured HTML5 game engine with visual interface for building games.
RPG Maker
Make your own PC game with RPG Maker. Our easy to use tools are simple enough for a child, and powerful enough for a developer. Try it free today!
Unity
The multiplatform game creation tools for everyone.
Unreal Engine
Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.