Crush the Castle on iPhone free today

If you're a fan of Finnish developer Rovio's excellent US #1 feathery flinger Angry Birds, then this is definitely a game you'll want to download.

Crush the Castle is all about launching a trebuchet to annihilate various kingdoms full of royalty.

As in Angry Birds, you're presented with lots of different structures spread across 90 levels which are housing the enemy.

Carefully placed cannon balls (and a bit of luck) will see them toppling to their dooms.

For a limited time only - it's due to go back paid to 99c any day now - Crush the Castle is free to download from the App Store, so make sure you grab it quick!