Portal 1 is only 3-5 hours.
Portal 2 is only 6-8 hours
Donkey Kong Country is about 3-5 hours, tops (all three of them)
Super Mario World is maybe a 4-6 hour game
Super Mario Bros. 3 is maybe 2-3 hours
Length is not directly tied to quality. Fun, however, is.
My Console Library:
PS5, Switch, XSX
PS4, PS3, PS2, PS1, WiiU, Wii, GCN, N64 SNES, XBO, 360
3DS, DS, GBA, Vita, PSP, Android