This is where UMS transcended its limits. Using "trigger-based" saves (a password system), you could level a hero unit from level 1 to 99 over dozens of sessions.
Ums maps were incredibly popular among competitive players, as they provided a way to play the game in new and exciting ways. Many Ums maps were designed with professional play in mind, featuring symmetrical terrain, balanced resource distributions, and intricate gameplay mechanics. brood war ums maps
They succeeded.
If you search for "brood war ums maps" on archive.org or a revival server (like Shield Battery), these names will immediately trigger dopamine hits: This is where UMS transcended its limits