I don't usually mention updated files, since if you've already bought them, you get told when they get updated.
But I thought this would be a good exception (for one, I have nothing else to post) but also because I really enjoyed his Mad Monks of Kwantoom. Ruins of the Undercity is essentially the prototype for that product, essentially a solo way of playing (generating dungeons and visiting the town).
The original Ruins was solid, but he Kwantoom was really, really well laid down (and apparently done in Open Office). The update brings Ruins up to Kwantoom's standards. If you don't have it, it's well worth the $5. (I thought so, anyway)