Source: http://www.blitzbasic.com/Products/_index_.php
Create 2D Games and GUI Apps for Windows
Features: BlitzPlus compiler, IDE, debugger, example code, tutorials and documentation.
Requirements: Windows 95/98/ME/2000/XP/Vista/7; Optional DirectX/OpenGL support.

Click
here to learn more about BlitzPlus.
How to obtain your free copy of BlitzPlus:

Click
here to create an account.

When requested to register a product, select BlitzPlus and enter the following code:
2SX-PBXYB-KVLWF-WLJK3-V3

Click the Account > Product updates link - from this page you can download BlitzPlus!