Timeline: Halo | Timetoast

Period: Sep 11, 2001 to Sep 11, 2002

halo combat evolved or 1

halo is the first game of the series
Period: Nov 9, 2004 to Jun 26, 2006

Halo 2

Halo 2 is the second halo game in the series
Period: Sep 25, 2007 to Sep 27, 2007

Halo 3

Halo 3 is the third of the halo series.
Period: Sep 22, 2009 to Sep 24, 2009

Halo 3 ODST

Halo 3 ODST is the fourth in halo series
Period: Sep 24, 2010 to Sep 25, 2010

Halo Reach

Halo Reach is the fifth in the halo series