Description:

The Modular Reactor Jetpack is a customizable chest-mounted flight system that burns multiple fuels—coal, blaze powder, lava buckets or netherite scrap—while tracking a heat gauge to prevent overheating. Equip it in your chest slot, press J to toggle power (or hit the Toggle/E-Stop buttons in the GUI), then hold Space mid-air to thrust upward and steer with your view; releasing Space immediately stops your ascent. Press G (or Shift + Right-click) to open the sleek GUI, slot fuel into the four “F U E L” cells, install Speed Boost, Hover Mode, Altitude Limiter or Emergency Slow-Fall upgrades, and watch your remaining fuel and heat levels at a glance.