 Spin @-@ off titles were planned for release on handheld systems , but did not progress far in development . Rumors of a handheld Halo title for the Game Boy Advance surfaced in 2004 . Bungie denied the rumors and commented that such a project between Microsoft and Nintendo would be " very unlikely " . At a Las Vegas consumer technology convention in January 2005 , rumors spread about a version of Halo for the handheld Gizmondo system . Bungie denied the rumors stating they were not making a game for the system . A former Gizmondo employee later revealed development only extended to basic story and game structure concepts to obtain funding from investors . In 2006 , a concept video for Microsoft 's portable Ultra @-@ Mobile PC featured footage of Halo and caused speculation for a handheld title . Microsoft later stated the footage was for demonstration purposes only ; Halo was included because it was a Microsoft @-@ owned property . In January 2007 , IGN editor @-@ in @-@ chief Matt Casamassina claimed he played a version of Halo for the Nintendo DS . He later demonstrated on @-@ camera , in @-@ game footage of an early @-@ development style version of Halo DS . The demonstrated work featured dual @-@ wielding and a version of the Halo 2 map Zanzibar . On October 5 , 2007 , Bungie employee Brian Jarrard explained the Halo DS demo was in fact an unsolicited pitch that was never taken on . 
