Awesome bonus levels or bonus mini-games

[Turbo Kid]

RE 4 doesn't technically have levels but if it did, these would be the bonus ones

 

[bjork]

I was always fond of the bonus stage in Shadow Dancer. Good little tune, too

 

[RanmyakuIchi's icon RanmyakuIchi RanmyakuIchi]

Doesn't get much more classic then wailing on a car

 

[Alleway]

FF8's Chocobo World and Triple Triad.

 

[Bonkers225]

Mini game in Aladdin on the Genesis with Apu

 

[Neb Lleb]

One Word: Quake.
Two more words: Ziggurat. Vertigo.

 

[Deleted member 560402]

 

[werewolfx]

I can't see that screen without this playing waaaaaay in the back of my mind

 

[Neb Lleb]

I can't see that screen without this playing waaaaaay in the back of my mind

I T ' S G O O D F O R Y O U R S P L E E N !

 

[Pinballbuzzbro]

In order:
Dick Tracy (Sega Genesis)
Robocop 2 (Arcade)
Night Slashers (Arcade)
Two Crude Dudes (Sega Genesis)
Metal Black (Arcade)
Caddilacs and Dinosaurs (Arcade)

 

[Anoobis]

Skullmonkeys has a great bonus room song.