InstaLoad

InstaLoad is a Fabric mod that makes world transitions feel instant. Join a server, switch lobbies, respawn, or load a singleplayer world without staring at a loading screen.

Features

• Skips the loading screen on server joins, respawns, and world swaps. The world shows up as soon as it's ready.
• Starts singleplayer worlds without waiting for the spawn region to finish loading (441 chunks on 1.21.x, ticket-based on 26.x). Spawn chunks keep loading in the background.
• Network and world-loading logic keeps running normally. Only the blocking screen layer is removed.
• If a transfer hangs, a disconnect button appears after 30 seconds so you're never stuck.

Which file do I need?

• Minecraft 26.1.2: the x.x.x+26.1.2 builds.
• Minecraft 1.21.x: the x.x.x+1.21 builds. Verified on 1.21.8+.

The builds are version-specific: a 26.1.2 build won't load on 1.21.x and the other way around.

Notes

• A normal client-side install gives you everything, including the singleplayer spawn shortcut. Nothing needs to be installed on servers.
• This project is an independent implementation inspired by the "Optimized World Swapping" of Patcher in 1.8.9 and Fastload in 1.18-1.20.