AdvancementFireworks

When a player finishes an advancement, the sky lights up with a sequence of multicolored fireworks, so an achievement is shown as an event rather than a small notice. The effect is built on the component system introduced in the 1.21 line, which handles the colors and explosion shapes of each rocket.

The mod is aimed at survival and multiplayer play, where achievements are otherwise often missed. Rockets are launched in timed sequences, which the author says keeps the show from causing lag. It works alongside other mods that add advancements or dimensions, since it reacts to advancement completion rather than to specific content. Files are published for NeoForge only, for 1.21.1 and 1.21.8, with 1.0.1 for 1.21.8 as the latest file, and the code is not open source. Client and server both need the mod, so every player on a server that runs it must install it too.