Doom-teletext generates a teletext stream that contains the rendering of the 1993 first-person shooter game Doom. Teletext is a standard for displaying simple mosaic graphics and text on TVs. Each teletext page consists of 25 rows that can hold 40 characters each, while some characters are not displayable but hold information like text color of subsequent characters of the same line. A teletext line can display 40 characters; in graphics mode, one character is required to switch to contiguous or separated graphics modes. To play Doom-teletext, one needs to use a WAD file, and if the game is played on a TV, a Raspberry Pi listening to port 8080 is needed.
https://github.com/lukneu/doom-teletext