A downloadable trainwreck for Windows
Threefold Trials www.threefold-trials.com
"The Dark Souls of match-three puzzle games"
You have been chosen by Metis, the goddess of puzzles. Prove your worth and become her champion.
A demented mashup of Threes, Triple Town, Nethack, and a bunch of other nonsense.
Requires .NET 4.0 and XNA 4.0. See http://www.threefold-trials.com/ for download links if you don't have them.