"an evolutionary comparison"
1991: Sega publishes Sonic the Hedgehog
1991: IDG publishes DOS for Dummies
1992: Sonic the Hedgehog 2
1992: Windows for Dummies
1993: Sonic CD
1993: The Internet for Dummies
1994: Sonic the Hedgehog 3
1994: The Internet for Macs for Dummies
1994: Sonic and Knuckles
1994: Upgrading and Fixing Macs for Dummies
1995: Knuckles' Chaotix
1995: Sex for Dummies
1999: Sonic Adventure
1999: Yahoo! for Dummies
2001: Sonic Adventure 2
2001: Being Vegetarian for Dummies
2004: Sonic Heroes
2004: Leopard Geckos for Dummies
2005: Shadow the Hedgehog
2005: Exercise Balls for Dummies
2006: Sonic the Hedgehog
2006: Quake 4 Mods for Dummies
2007: Sonic and the Secret Rings
2007: Kids' Sudoku for Dummies
2008: Sonic Unleashed
2008: BBQ Sauces, Rubs and Marinades for Dummies
2009: Sonic and the Black Knight
2009: Lessons from the Great Depression for Dummies