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Flight Sim Toolkit (FST) was a game written by Simis that was released around 1990 that let you create your own flight simulations. It was available on a number of platforms including RISC OS and Windows. There was only one release of the RISC OS version but Simis continued to develop the Windows versions of the programs until the mid 1990s. Simis (now Kuju Entertainment) released the source code of the Windows version of the flight engine, Fly, in 2002. I have ported the program back to RISC OS and added a number of enhancements since then. I have also updated the Windows version. Both versions can be downloaded from here.

The main web site for FST is Adrian Brown's site, www.flightsimtoolkit.co.uk There are many sims plus older versions of the program and much more on his site. This is primarily for the Windows version of the program but the sims can be used more-or-less as supplied with the RISC OS version of the program.


Flight Sim Toolkit is copyright Kuju Entertainment.
Fly version 3 is copyright Dave Daniels, Adrian Brown and Ron Walker.


The current version of Fly is 3.27 (August 2007).


The zip archive contains an application called !Fly for running FST sims plus some documentation on the keyboard commands and so forth that Fly uses. There is much more documentation available on Adrian's site if you are not familiar with FST.

RISC OS version: click here


This is a copy of what is on Adrian Brown's site and is supplied in a zip file. There is some documentation on the keyboard commands and so forth Fly uses in the 'docs' folder in the zip file, plus there is much more you can download from Adrian's site if you are not familiar with FST.

Windows version: click here

The Windows program uses the Allegro games library and needs the Allegro DLL if you do not already have it. To download a zip file containing this,

Allegro 4.2 DLL: click here

FLY.EXE is a drop-in replacement for any existing version of FLY.EXE in a FST sim. The Allegro DLL should also be copied into the sim folder.