Ghastbusters

A proton pack needs a firing mechanism in the backpack slot before it can be used. Its proton charges are consumed as it fires, and it can lock onto enemies, make them glow and reveal ones that are normally invisible. The P.K.E. meter searches for nearby ghosts and shows how close the invisible entities are, which also makes it useful for finding hidden players during PvP.

The mod adds Etco Goggles, a fashionable headwear piece that lets the wearer see at night, with a cost shown as a green overlay. Jumpsuits modeled on the first film's protagonists are included, along with the Etco-1 car and its unfurnished sister Etco-0. Etco-1 carries four slots for proton packs and blasters, and lockers can store a full set of busting equipment.

Ghost Trap works like a shulker box and is accessed through the inventory. Etcoplasm, the green goop from the first movie, comes in regular, Supercharged and Repulsive forms. Supercharged Etcoplasm is extremely viscous, flows quickly and pulls mobs toward its center. Players caught in it can suffer blindness, nausea, slowness and a loss of the ability to break blocks. Ghastbusters is published for Forge only and the environment is client and server, so the server and every player need it. The release is 1.0.0 for 1.20.1, with the MIT License covering the code, which is not open source.