DELTARUNE: Gaster boss fight (DEVICE_ENDING TEASER #2 ) (Fangame by UsualCreator) Credits Below: ╔═══════════════════════════╗ ║ ⚠️ WARNING: FANGAME ║ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ═ ╝ ━━━━━━━━━━━━━━━━━━━━━━━ ➡️ This is NOT official Deltarune content. ➡️ The is NOT mine. ➡️ All these reposted songs or animations or fangames videos are not and will never be monetized; the purpose is simply archival. 🎖️ All credit and support goes to the original creator. 🙏 If you are the author and do n