PICO-8 harkens back to limited colors and resolutions, and includes a chiptune editor. It exports to a web player, so should work anywhere.
https://www.lexaloffle.com/pico-8.php
If you want to make an adventure game, you can make a hypercard-like text game in Twine which also exports to the web. You could even draw on old DOS fonts like at https://int10h.org/oldschool-pc-fonts/fontlist/ and style your game like it's 1990!