In what year was Sonic the Hedgehog released?
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1991
1994
1994
1994
1994
1994
1994
1992
1994
1993
1992
1994
1993
1992
1994
1993
1992
1994
1993
1992
1994
1993
1992
1994
1993
1992
1994
1993
1992
1991.
1994
1993
1992
1994
1991.
June 21, 1991
1993
1992
1994
June 1991
1991.
1993
1992
1994
June 1991
June 21, 1991
1993
1992
1991.
1994
1993
June 3, 1991
1992
June 1991
1994
1991.
1993
1992
1994
June 21, 1991
June 1991
1991.
1993
June 3, 1991
1992
June 30, 1991
June 1991
1993
1992
1991.
June 21, 1991
1993
1992
June 1991
1991.
1991 & 1991
1987
1991, Sega
1991 & 1992
June 30, 1991
1993
1992
1995
1991-90
June 21, 1991
June 1991
1987
1991.
1993
June 3, 1991
1992
1995
June 21, 1994
1990
1991-Jun
1991-90
1987
June 1991
Sega Genesis
June 21, 1991
1991 & 1991
1993
1992
1995
1988
1991.
1991 & 1992
Segundo
1990
1991, Sega
June 21, 1994
1987
1991 -
1993
1991-96
1991-Jun
1995
1988
June 1991
1991-90
1991 & 1994
Sega Genesis
1990
1991.
1991 – 2
1987
Segundo
1991 –
June 3, 1991
1995
1988
June 21, 1994
1991-92
1991 -
June 21, 1991
June 30, 1991
1990
June 1991
Sega 64
Sega 1
1991-90
1991-Jun
1991 & 1992
1991 & 1991
1987
Sega Genesis
1991.
1991,
1995
1988
1991 – 2
1991, Sega
Segundo
1991 –
1990
1991-96
June 21, 1994
1991 & 1994
1987
1991 -
June 1991
1991 – 1991
Sega 64
1995
1988
Sega 1
1991-90
1991.
1991,
Sega Genesis
June 21, 1991
June 15, 1991
1990
1991 - 2
1991 – 90
1991-92
1991-91
1987
1991 for Sega
1991 – 1
Segundo