When was the first installment of the Halo series released?
2001
1991
1991
1993
1991
1993
1991
1993
1991
1993
1991
1993
1991
1993
1995
1996
1991
1990
1993
1995
1996
1991
1990
1993
1995
1992
1996
1994
1997
1991
1990
1993
1995
1992
1996
1994
1997
1991
1990
1993
1995
1992
1996
1994
1997
1991
1990
1993
1995
1992
1996
1994
1997
1991
1990
1993
1995
1992
1996
1994
1997
1991
1990
1993
1995
1992
1996
1994
3 years ago
1997
1991
1990
1993
1995
1992
1996
1994
1997
1991
10/23/10
3 years ago
1990
1993
1995
1992
1996
1994
1997
10/31/10
1991
10/9/10
2001
1990
10/11/95
1993
1995
1992
1996
1994
3 years ago
1997
1991
2001
1990
10/23/10
1993
1995
1992
1996
1994
1 October 1997
1997
1991
10/11/95
3 years ago
2001
1990
1993
1995
1992
1996
1994
1997
1 October 1993
1999
1991
9-11-97
2001
1990
1998
1993
1995
1992
1996
1994
10/11/95
10/23/10
1997
1999
2001
1990
10-11-99
1998
1993
1995
1992
1996
1994
1 November 1993
1 November 1997
1997
1999
1 October 1996
1 October 1997
10/11/95
10/23/10
10/31/10
3 years ago
1 December 1993
1 October 1993
1 September 1997
10-11-99
10/11/96
10/11/94
1 December 1997
10-11-98
1 March 1993
1 March 1997
10-11-97
10/9/10
1 October 1996
10/11/95
9-11-97
1 October 1990
10-11-99
10/11/96
1 November 1993
10/23/10
10/11/94
10/11/93
10-11-98
1 October 1995
3 years ago
1 November 1997
1 October 1991
1 December 1993
1 October 1997.
1 October 1998
1 October 1993.
3 years ago
1 November 1993.
1 October 1996.
1 November 1997.
1 September 1997.
1 December 1993.
9-11-97
1 March 1993.
1 December 1997.
1 March 1997.
9-11-98
3 days ago