Brain powers

Brain powers is a Fabric mod for 1.21.1 built around a brain capacity meter. The meter starts at 10% and climbs toward 100%, and each stage of capacity brings its own special powers and abilities. The first stages give permanent night vision and extra movement speed, while higher stages grant invulnerability, large saturation and absorption, and a passive cosmic pulse that buffs friendly creatures and damages hostile ones nearby.

Progress runs through crafting. At the start only the neural seed can be made, using a regular crafting table, and each stage of capacity makes the next recipe appear in the recipe book, so items are gained one at a time as the player advances. Early items are available between 10% and 40%, mid-tier items between 50% and 70%, and late-tier items between 80% and 100%. The late tier uses rare end-game materials such as nether stars and heavy materials. The mod is published for Fabric only, requires Fabric API, runs on the client and the server together, and is released under All rights reserved, so it is not open source.