Shoot 'Em Up Kit Alternatives

A direct successor to the C4 engine.

PlayCanvas is an open-source game engine built on WebGL and WebVR.

A complete JavaScript framework for building 3D games with HTML5, WebGL and Web Audio

Armory 3D is a free and open source game development software developed using Haxe and Kha and made to run inside Blender.

Goo Create is a browser based WebGL content creation tool. It supports FBX, OBJ, JPG, PNG, GIF, MP3, MP4, OGV and OGG files among others. Animation can be automated using scripting, timeline or a super intuitive visual state machine editor.

MonoGame is an open source implementation of the Microsoft XNA 4 Framework.

Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released...

Feature-packed 2D and 3D open source game engine.

Panda3D is a video game development engine and rendering software. It is developed and maintained by the Carnegie Mellon University Entertainment Technology Center.

Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.

HeroEngine is the only all-in-one development platform for making and operating online games.

FPS game and engine

The Gamebryo engine's flexibility and rapid iteration capabilities make it a top choice for a variety of 3D visual game development projects.