Recreation of the pixel font used in Sega's "Wonder Boy" (1987) on the Master System. Slightly expanded, but for the most part only the characters present in the game ROM have been included.
Updated 2 December 2018: referring back to the game ROM, corrected the "Q", "K", "J", "X", "/", comma, heart, "7" (swapping it for the one used in game, rather than on the title screen), and added the missing "!" and dash/minus. Also included the two lowercase "a" and "e" characters used for "escape" on the title screen.
This is from SEGA's Up 'n' Down, this was also used in early Sega System 1's game, with different variations of the letters. This font actually debuted in a 1982 game from Sega called "Subroc-3D", and also appeared in "Buck Rogers - Planet of Zoom", "Star Jacker" and "Regulus".