.

The Blitzbasic language From here's a list of features from the site,

• Mipmapped textures
• Transparent textures
• Realtime texture scale/rotate control
• AnimTexture support for multi-frame texture animations
• Highly flexible 'entity' system
• Multiple lights/cameras
• Dynamically deformable meshes
• Support for alpha, additive and multiplicative blending
• Multi-texturing with up to 8 texture 'layers'
• Dynamic level-of-detail terrain
• Boned animation support
• High speed collision engine
• Directly loads .X, .3DS, .Md2 and Quake3 .BSP files
• Render-tweening for smooth graphics at any frame-rate
• Animation 'transition' control for smooth anim-to-anim changes
• Ambient, directional, point and spot lighting
• Vertex coloring
• Specular hightlights
• Environment mapping
• Reflection effects
• Fast!

Cygwin

Cygwin is a UNIX environment for Windows. It consists of two parts:
A DLL (cygwin1.dll) which acts as a UNIX emulation layer providing substantial UNIX API functionality.
A collection of tools, ported from UNIX, which provide UNIX/Linux look and feel.

With DarkBASIC Professional you can:

• Create any type of game or application
• Develop ideas fast
• Create professional quality results
• Debug and fix your code easily
• Produce any 2D or 3D effect you desire
• Develop in a Windows based environment
• Make games using Quake 3 levels
  
  

A C++ compiler for Windows.

A collection of freely available and freely distributable Windows specific header files and import libraries combined with GNU toolsets that allow one to produce native Windows programs that do not rely on any 3rd-party DLLs.

That's what they say on the site and it works pretty well. But I wouldn't advise using it by itself, download Dev C++ to make life easier.

At the moment this is pretty much the standard in game development. It has all the features you could need and more besides. Some of the most notable being, well optimized c++ compiler, profiler and debugger.