About

An inventory GUI-based spawner upgrade system for Minecraft servers. Players manage loot spawners entirely through interactive menus — upgrading levels with upgrade cores, previewing stat improvements, and collecting generated loot. Features configurable upgrade requirements (Vault economy, **, five tiers of upgrade cores), scaling formulas for loot speed/amount/rare chance/storage, upgrade preview with stat comparison, success animations with fireworks and particles, and armor-stand holograms.