The iTunes App Store offers downloads of several apps for Apple iPhone, iPod touch, or iPad for free, as listed below. At $1 to $3 off, each is at the lowest price we've seen. The deals, all with applicable platforms noted:

• Staunch Defense for iPhone / iPod touch: Tower defense game
• Blowing Pixels Planet Defender for iPhone / iPod touch: Arcade shooter
• Robot Wants Kitty for iPhone / iPod touch (pictured): Racing game
• Traffic Rush for iPhone / iPad: Arcade game
• Jelly Invaders for iPhone / iPad: Twist on Space Invaders
• Legends of Yore for iPhone / iPad: Rogue-like RPG