Mobile-trivia junkies rejoice.

In Topple 2, your enemy is gravity, as are weirdly shaped pieces that aren’t always conducive to tidy stacking.

Behind the clever name lies well-designed, Risk-like turn-based strategy you can play alone or against humans in a pass-the-phone style multiplayer. Check out Strategery Lite (free) if you're not convinced, but the full version is worth the $2. More after the jump..

The Oregon Trail winds its way onto the iPhone. One hundred points for nostalgia, but how does it actually play?

It's like Guitar Hero, except with trombones. And leaves.

It's been a long time coming, but finally SlingPlayer Mobile for iPhone is alive. Well sort of, Apple still hasn't pushed it live. But it will, any time now.

Beyond its marginally cute name, Tweetsville is a solid Twitter client.

It’s got copy and paste--need we say more?