Maybe you’re misremembering or referring to Doom (2016). The original Doom was developed for DOS and id had to build a lot of its own network stack. BSD style socket based networking wasn’t a given in DOS.

Still, zclaw is an impressive achievement.

yah my back of the envelope math..

the “app logic”/wrapper pieces come out to about 25kb

WiFi is 350 Tls is 120 and certs are 90!