Hollow Frontier

The first public release, for Minecraft 26.3 on NeoForge (needs GeckoLib).

• The frontier: black powder revolvers, rifles and muzzleloaders you load by hand, with six gun enchantments. Towns with names, saloons, sheriffs, banks, a newspaper, a railroad depot and townsfolk who keep a daily routine. Bounties, wanted posters, wanted stars and posses, outlaw raids on towns at night, blackjack, saloon drinks and brawls, dust devils, rattlesnakes and town cats.
• The steam age: boilers, copper pipes, tanks and gauges (c:steam, so other mods' pipes and tanks work), the Steam Crusher, Steam Drill, Steam Handcar, and a coal-fired airship.
• The Hollow Earth: wake a Polar Gateway and fall through Symmes' Hole into a world under a golden crust with an inner sun. Four biomes, megafauna (woolly mammoths, terror birds, ground sloths, glyptodons), starsteel and phlogiston, lore sites, dungeons and loot.
• Concavia: the Crystal Ruins and the Kindled, their story, and the Sun Archon boss fight.
• The Grays: sightings, cattle mutilations, crop circles, men in black, abductions, Gray stations and pens, crash sites, phlogiston weapons, your own Prototype Saucer, and the Mothership boss fight.
• After the Mothership: Gray landings, the Mothership's return, freed outlaws settling down, restoring the Crystal Ruins and their waystones, and a stranger at the saloon.
• Optional support for JEI, Jade and Curios, glowing parts under Iris shader packs, and per-world configs for raids, mysteries, saucers, the saloon and dust devils.