I don't know when it was invented but halo CE was created November 2001.
Halo was created by Bungie.
2001 with the game Halo Combat Evolved. It was created by the company Bungie.
Bungie. Bungie CREATED it, nobody really INVENTED it.
George bush invented it that why he's awesome
halo 1 CE was made in 1997
Nobody, LEGO Halo doesn't exist.
Halo Reach, Halo: Combat Evolved, Halo 2, Halo 3: ODST, and Halo 3 were made by Bungie; Halo: Wars was created by Ensemble Studios; Halo: Combat Evolved Anniversary and Halo 4 were created by 343 Interactive
Halo effect was created in 1920.
Halo in a Haystack was created in 1994.
Halo Friendlies was created in 1998.
Halo Star was created in 2004.
Halo James was created in 1988.