...anyone want to try to debug why some don't work and some seem to?
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You can get:

* Kayak Extreme
* Jetboat Superchamps 2
- Jetboat Superchamps
- SuperChix '76
- Hot Chix 'n' Gear Stix

* NOTE: I have successfully ran Kayak Extreme and Jetboat Superchamps 2 on Windows XP Home (SP1) for some time, without even needing to set Compatibility Mode, however whether they work may vary depending on your set-up. The other three titles do nothing when you start them on Windows XP, requiring you to ctrl+alt+del and End Task the appropriate process (e.g. jbs.exe for Jetboat Superchamps).

On Windows 95/98/Me there should be no problems with any game.

For more information and details of how to get your free license keys/download the games, go here: http://www.smallrockets.com/general/free.htm
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So, any technical wizards fancy a look? Heh!