Once Forgotten

The author describes the mod as a small project meant to expand Minecraft lore with new content. Players find the new blocks, mobs and ores while exploring, and the structures of the End hold much of the material. A library in an excavation stronghold carries an in-world journal entry that sets the tone of the mod.

The Worldforge, an old piece of gear that the mod's storyline treats as important to its later history, is one of the items added, alongside Clockwork Mechanisms, Tempus, crystal pieces that can be put to use in new redstone builds, and scrap metal salvaged from ancient remains. The author also mentions smithed Uru Ingots and tools. Geckolib is required, so it must be installed alongside Once Forgotten. The environment is client and server, so the server and every player need the mod, and it is released under the MIT License without being open source.