I never would have picked Raymond Briggs’ The Snowman as the focus for a video game but in 1984 Quicksilva Ltd. released this simple platform game for the ZX Spectrum 48K in the UK and the Commodore 64 in North America. The instructions are sparse:
Run around the garden paths and collect snow, clothes, toys, etc, and ice (to prevent melting) and build a snowman. Eat to keep yourself awake, and collect goodies to earn extra points. Freeze gas flames (which melt snow and ice) with an ice lolly, and grab an alarm clock to knock out a sleep monster (who will send you to bed).
The Internet Archive has it playable online using the MESS emulator or you can download it from World of Spectrum. As is typical for me, I couldn’t get past the first screen.