Not much love for my favorite and a long, long time iOS game...Trism.
Unfortunately, the developer doesn't have much love for their supporters. There were bugs that never got fixed, updates that were never done. Last one in Aug 2010. Great puzzler, but I don't think has aged well.
I would love to see the full implementation with all the power ups of the Drop 7 game.
There were some mentions of Everett Kaser's Honeycomb Hotel earlier in this thread. This actually came out on iOS a few weeks back.
For me, the only conceivable answer is the original Puzzle Quest, a game that spawned an entire genre. I owned it on DS, Pc/Mac, 360, iOS, etc. shame you can't get it on the App Store anymore, and the second game is not as good.