Proto:Halo 2

This page details one or more prototype versions of Halo 2.

To do: This content was moved from the Prerelease page and needs to be rewritten/expanded upon. 2007 Windows Vista debug build found in the Digsite leak and compare to the leaked debug executables for XBox. Multiple builds for XBox have been dumped over time. Create relevant sub-pages The Digsite leak's tags

Halo 2 had a very troubled development, and this is evident from the numerous prototype builds leaked over the years. There are also prototype builds from its port to Windows Vista in 2007.

May 3, 2003 Builds and Tools Debug Xbox and PC builds and the toolset used to build the E3 2003 demo - with the Xbox builds featuring the once-mythical 'pstencil' rendering engine used early on in Halo 2's development. Contains many test levels and raw assets from early development. Leaked in December 2025.

E3 2003 Demo A profiler build containing a near-final version of the legendary demo. Compiled on 11 May 2003; leaked in December 2025.

Xbox Live Multiplayer Alpha A build given to Microsoft employees testing Xbox Live, dated January 2004.

E3 2004 Multiplayer Demo Shown in the E3 2004 multiplayer demonstration, dated May 2004. Playable on the show floor at E3. Found and released in January 2025.

Xbox Live Multiplayer Beta A build given to Microsoft employees testing Xbox Live, dated June 2004.

TU 1.5 Debug A full debug build of the retail game's newest title update.

Vista Review Build A review build of Vista for PC. Dated April 9th, 2007. Leaked in January 2021.

Vista Debug Build A debug build of the Vista port along with all its devtools. Dated April 30, 2007. Contains a LOT of tags for various mid-development iterations of retail levels. Leaked with the Digsite files in December 2024.

h2v_tags_cliff-002 Found in the 2024 Digsite leak, a folder containing a LOT of tags for various mid-development iterations of retail levels. Compatible with the Vista version of the game.