Just a heads up to the ~400,000 Sentinel: Mars Defense players out there: the latest version has just been approved, integrating OpenFeint 2.4 and adding a set of achievements, so get the game updated and start earning points!
We initially released Sentinel: Mars Defense (then just Sentinel) almost a year ago with our own high score implementation. The OpenFeint platform was just entering closed beta at the time - a quick glance at the icons on the App Store shows they've come a long way since then!
If you haven't yet picked up Sentinel: Mars Defense (why not?
), now's a great time to jump on board to take advantage of the fresh leaderboards. If you like tower defense you should really give it a go