ZZT is an ANSI character-based video game, released in 1991 by Tim Sweeney of Potomac Computer Systems (now Epic Games). ZZT itself is not an acronym for anything; its title was chosen so it would always appear at the bottom of newsgroup listings.
Permission was granted by Tim Sweeney to allow re-distribution of ZZT.
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.