HGamer3D is a game engine for developing 3D games in the programming language Haskell. The game engine uses available libraries for 3D graphics, sound, input device handling, gui programming and other areas and make those functions available for the Haskell programmer by providing a Haskell API on top of that. Since version 0.3.x HGamer3D is available on Windows and Linux.
There have been some issues in installing version 0.3.x of HGamer3D. This should be fixed now (as of April 2014). Check the new install instructions in section How To Install.