Olympic Games | Commonwealth Games | Summer Olympic Games | Pan American Games | 2006 Commonwealth Games | 2006 Central American and Caribbean Games | Swimming at the 2006 Central American and Caribbean Games | 2013 Southeast Asian Games | Winter Olympic Games | 2002 Commonwealth Games | 2007 Pan American Games | Paralympic Games | 2010 Commonwealth Games | World Games | 2011 TÅhoku earthquake and tsunami | 2011 Pan American Games | Games Workshop | 2003 Pan American Games | Asian Games | 2013 Island Games | X Games | tsunami | 2006 Asian Games | 2011 Pacific Games | Gay Games | The Hunger Games | Southeast Asian Games | 2013 Mediterranean Games | 1999 Pan American Games | 1998 Commonwealth Games |
Walls also created Blue Force, another adventure game featuring a police officer, in 1993 for Tsunami Games.