Nintendo's "Super Mario World" (1990) on the SNES contains a maddening 5 pixel fonts. This is the recreation of the two small, 6px tall variants used for the game menus, end-of-stage stats, and the end credits. These have been spread out across the upper- and lowercase. Note the reduced-size 5px tall numerals, and the copyright symbol used on the title screen. UPDATE: in the game, the font has a 2px spacing to account for the outline. in this recreation, i opted to just go for a 1px spacing - if you do use it outlined, make sure to add the extra pixel for authenticity.

Update Sept. 2019: fixed the incorrect "Q"