Quantum Engine is an cross-language 32bit native code compiler with an advanced 2D game engine for PC’s running Microsoft Windows® and uses Direct3D® for hardware accelerated rendering. It’s robust, designed for easy of use and suitable for making all types of 2D games and other graphic simulations. Your code can compile to a stand-alone EXE and/or to dynamic loadable compiled units (runtime packages). The core game engine consists of a high-level object oriented game application framework with a plethora of classes and routines to allow you to rapidly and efficiently develop your graphics simulations. There is support for surfaces, textures, sprites, audio, streams, archives, configuration files, render targets, swap chains, databases and much more.

Quantum engine is free of charge for freeware projects but if you plan to sell them then you need to buy license for the game.

Makers of unreal tournament released the development kit for free.They offer this SDK free and for almost any type of game development usage be it commercial or presentation or for education,personal,collaborative project.

System requirements are higher so if you’re with limited system resource then this SDK is not for you.

Minimum:

* Windows XP SP2 or Windows Vista
* 2.0+ GHz processor
* 2 GB system RAM
* SM3-compatible video card
* 3 GB Free hard drive space

Recommended for Content Development:

* Windows Vista 64 SP2
* 2.0+ GHz multi-core processor
* 8 GB System RAM
* NVIDIA 8000 series or higher graphics card
* Plenty of HDD space

Check the UDK site here.

It also has two sub-projects for specific media support. First project is FFMPEG-Java and second is Theora-Java.

What is FMJ ?

FMJ is an open-source project with the goal of providing an alternative to Java Media Framework (JMF), while remaining API-compatible with JMF. It aims to produce a single API/Framework which can be used to capture, playback, process, and stream media across multiple platforms.

From where to get it ?

You can get more information about FMJ and download it from here.

What is Nuclex ?

The Nuclex Framework is a collection of well-designed building blocks for XNA games and other demanding applications written in .NET. These building blocks are not interconnected — you can pick what you need, mix and match with other class libraries and architect your game the way you want it.

What are the features ?

* Better Collections (Deque, PriorityQueue)
* 3D Text Rendering
* LZMA Content Compression (that’s 7-Zip’s compression)
* Arbitrary Primitive Batching (think 3D SpriteBatch)
* Rectangle Packing
* Multi-threaded Particle System
* Themeable Graphical User Interfaces
* Game State Management
* Spatial Partitioning (R-Tree, QuadTree)
* Debugging Overlays
* Collision Detection
* Automatic Vertex Declarations

From where to get it ?
You can download the Nuclex from the Codeplex site .

Free or Paid ?

It is paid application. It costs €9.95 bucks for the product.

What are the features ?

- Editor with example scripts
- More than 55 affectors, emitters, observers, handlers and renderers
- PhysX support
- Particle System LOD
- Soft particles
- Atlas texture support and atlas tool
- Manual, tutorial and API description
- And more …

New version of particle universe is just released. That is version 1.1, so if you want to check it you can do so at FXpression site.

Official Quote :

* Get complete first chapter of the epic 5-episode adventure. Free one day only. If swallowed, induce vomiting.

Know more about game here.

JGame is 2D gaming engine that runs on system with java 1.2 and higher. Lots of features for classic arcade game development like collision detection, tile sequencing and more. Being in java platform it lets you run your game in most of the platforms with options like webstart, applet and MIDlets. It is small package of about 950kb. and demo games and source code is also available to download. And of-course it if free of cost.

For more information take a look at their site.

Official quote for Flade:

Flade (Flash Dynamics Engine) is an open source Actionscript 2.0 library for simulating 2D physics using Verlet integration. It currently features rectangular, circular, & wheel primitives, spring & angular constraints, and surfaces composed of line segments, circles, & rectangles. It’s designed primarily for games with a goal of speed and ease of use, and is MTASC -strict compatible.

Flade isn’t complete game engine, but it is more of physics engine. It is open source and it is focused on Actionscript 2.0. It is now closed but if you’re still looking for old engine cause of your restriction of Actionscript 2.0. Then you can find flade here.

As Flade is closed, but new project called APE featuring support for Actionscript 3.0 is active now.

It is available for multiple platforms: linux, mac and windows. Python and pyglet is necessary on system before you start working with cocos2D.

You can have sprite based animation and can direct sprites on where to move, delete and perform some action etc.

Documentation is also well written. You can browse it online or you can download. There are 5 tutorial videos for the beginners as well as intermediate users.

For more information you can check here.

Where to get it?
Audiere is available for download here .

Is it portable?
Yes. It Works with Windows and Linux.

What about license?
Audiere is open source and available under LGPL license.

Where to go for documentation?
It is available in multiple formats. here.