iPad owners are in for a treat heading into this weekend, as TowerMadness HD has gone free for today. Not only is it a rare occurrence to get a full fledged iPad editioin of a game for free, but this particular game normally sells for $7.99. TowerMadness HD is a fully 3D tower defense game, and the iPad version features same device multiplayer for head to head competition. We previewed the game back in May shortly before it’s release, and you can take a look at our review for the original iPhone version that was released over a year ago for more information.

This short developer video showcases the added multiplayer mode of the iPad version:

Even if you’re not typically a fan of tower defense games, there’s no reason not to give TowerMadness HD a spin during this free promotion. More information and player impressions can be found in the game’s thread in our forums.