Here is a nice Gaming Theme for WordPress.   It’s called GameFusion. Free WordPress theme GameFusion Features

  • Page navigation built in
  • adsense incorporated
  • Tested with all major browsers
  • Featured blog posts slider
  • compatible with latest WordPress versions
  • advertisement blocks management built in
  • Nested comments built-in
  • Widgets Ready
  • integrated custom menu
  • Automatic thumbnail management
  • Valid HTML/CSS
  • Gravatar incorporated
  • technology layout
  • Widgetized Right sidebar
  • Feedburner subscription incorporated
  • Post thumbnails and excepts
  • two column layout
  • fixed layout
  • 125×125 advertisement blocks supported
  • Easy to use theme options in admin panel
  • Social networking icons integrated
  • Custom logo image ready
  • Goolge analytics ready
  • search engines optimized
  • Social bookmarking buttons included
  • easy customizible

Download it Here