Anyone been wanting to get into AI War / the wonderul puzzler Tidalis (so much depth and game modes you'll never need another Match-3 game), the time is now!:

http://www.arcengames.com/store.php

You've got until the end of tomorrow. Purchase, purchase, purchase and help out one of the best developers in the business. 60% off everything.
Aargh - sorry. Didn't see the other thread (mispelled Arcen when I searched). Oh well - I suppose two reminders are even better than one!