No revenue estimate for PSN — its rating/review counts don't calibrate to sales the way Steam's do. The Steam version is estimated at $4K — a different platform, not this one.

Knight's Retreat

Knight's Retreat A chess game without any chess. Rearrange your troops to bring your best Knights back to your Kingdom in an abstract medieval world. Featuring: - 80 hand-crafted levels with increasing complexity. - A fun chess puzzle now available to everyone (even those who have never played chess) - Beautiful, abstract world inspired by Medieval Times; - Originally composed music to help you focus and relax while solving the puzzles