FYI, new Kindle apps:
LetterWeb (A Word Game for Kindle) by oicapps ($0.99)
Fish Tank (A Business-Strategy Game for Kindle) by Play Gray ($1.99)
infix: Insight (Interactive Fiction for Kindle) by black belt games
Ultimate Algebra Quiz (A Math Quiz Game for Kindle) by HandyX ($1.99)
The Shadow in the Cathedral (An Interactive Fiction Adventure Game for Kindle) by Textfyre ($9.99)