1. The Phase Bombarder is an Evolved Reborn-tier upgrader added in the Reincarnation Update.

2. The Freon Bombarder is a Luxury-tier utility upgrader and one of the first Luxury-tier items in the game

3. The Cataclysmic Warcry is an upgrader obtained through Crafting.It can be crafted using 15 Gears, 10 Metal Plates, 5 Wires, 3 Computer Cores, and 1 Nuclear Rod

4. The Auroral Wings is a Collectible - tier upgrader that was added in Part II of the Christmas 2019 event by opening the Midnight Lights Gift

5. Biomethane is a sustainable fuel that is produced by biogas upgraders which remove the CO 2 from biogas. Biomethane is produced from biogas that is derived from organic matter such as human waste / sewage, food waste, distillery waste or agricultural materials.