Top sellers included Sonic the Hedgehog , its sequel Sonic the Hedgehog 2 , and Disney 's Aladdin .
The initial pack - in game was Altered Beast , which was later replaced with Sonic the Hedgehog in 1991 .
Top sellers included Sonic the Hedgehog , its Sonic the Hedgehog Sonic the Hedgehog       , and Disney 's Aladdin .
The initial pack - in game was Altered Beast , which was later replaced with Sonic the Hedgehog in 1991 .