additions from backlog and osgameclones

entries/openfly.md

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+# OpenFly
+
+- Home: http://ariel.ucs.unimelb.edu.au/~gjo/
+- Inspiration: Flight Sim Toolkit
+- State: beta, inactive since 2001
+- Keyword: remake, simulation, free content
+- Code language: C
+- Code license: GPL-2.0
+- Code dependency: SDL
+
+The project aimed to create an updated flight simulation engine compatible with Domark Software and Simis Limited's Flight Sim Toolkit (FST), and support user-made games created with FST. The WEBCVS page is no longer available.
+
+## Building