Here are a few OpenFeint enabled games that have gone on sale this Friday.

If you don’t know, OpenFeint allows the iPhone community to see who’s top dog at different games. Games that use it generally have global high scores, but lots also have achievements, chat and Facebook connectivity. Most fun of all though are the games – such as Battle Bears and Hook Champ – that use OpenFeint to let you challenge your friends. For more info head over to the openfeint.com

  1. TileStorm ($1.99 > $0.99)

    Global rating: 3.45

  1. Tiki Totems ($1.99 > FREE)

    Global rating: 3.7

  1. Sentinel: Mars Defense ($0.99 > FREE)

    Global rating: 3.65