This does not play the actual version of Threes!, but a modified version that is completely deterministic.

On most platforms, the usual way to call the program is with:

java -jar threes.jar [options] input_file.txt

On Windows, a convenience launcher exists, such that it can be called by:

Threes.exe [options] input_file.txt

The output moves file is always written to stdout. All other messages should be written to stderr.

See Releases for a copy.