The team had heard rumours as early as mid-August that they may need to halt production, and rumours circulated at the time that Bungie was preparing to announce their own RTS Halo game. Although Microsoft had wanted to send an official cease and desist, no legal action was taken due to Bungie stepping in and asking Microsoft not to use legal action. Halogen was cancelled in September of 2006, following a request by Bungie's community manager to the Halogen team sent on September 8. įollowing the closing of Halogen, the production group recycled the developed assets for a different project titled 'Asylum' (later retitled to 'Signal'). On September 9th, 2006, the production group made an official announcement confirming the cancellation of development. Microsoft took notice of the mod's development and obtained a cease and desist order against the production group. Powered by CnC: Generals's SAGE, the mod featured the traditional assets such as base-building utilities, resource gathering, and unit-management system.

The mod was developed over three years prior to the cancellation.