I actually wrote this basic TriTryst clone almost half a decade ago (mtime of trtry.py is 2012-02-20T21:45 and those of the most recent tiles are similar, e.g. wild.gif is 2012-02-18T14:04). I am uploading this to GitHub without modification at long length in 2017.
Note on interface: keyboard only. Arrows to move, space to turn, enter to drop.
The zlib/libpng License (Zlib)
Copyright (c) Thomas Hori.
This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.
Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
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The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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This notice may not be removed or altered from any source distribution.