As expected, the second game from PopCap's sub-studio 4th and Battery hit the App Store last week, and I like it a lot more than I did Unpleasant Horse. Candy Train is actually an older PopCap title that was originally posted online, and it's been brought back as a free universal app for iOS. It's an interesting if simple puzzle game -- the idea is that there's a train rolling down a track, and you have to tap tiles to line them up so that the train has somewhere to go. Along the way, the train can pick up candy cars, and if you collect enough of those and a caboose, there's a station that you can pull into to clear the chain and "level up" into the next score bracket.
It's the kind of game that starts out pretty slowly and gets frantic fast, but there's just enough depth to it to keep you coming back to try again and keep that train going further. Yes, you can see why this isn't a full PopCap title (instead, it's just a 4th and Battery experimental game), but it's fun nevertheless.
And while there's sadly no Game Center integration or any extras to speak of (there's just one mode, on two different difficulty levels), the price is right at the cost of free. Definitely give this one a download.