Download-terraria-v4-v100967-3gs-univ-64bit-os100-ok14-user-hidden-bfi2-ipa

: v4 . In the context of mobile releases, this often refers to major engine updates or specific versioning used by third-party distributors.

: 3gs . This is a legacy tag often used by older IPA libraries, though it is contradicted by the 64bit tag later in the string.

The string provided— download-terraria-v4-v100967-3gs-univ-64bit-os100-ok14-user-hidden-bfi2-ipa —appears to be a specific for the game Terraria .