Immortality for Bonelab is a free modification designed for Windows that enhances gameplay by introducing immortality mechanics. Players can spawn an 'Immortality' item that allows them to survive damage, providing a unique twist to the gaming experience. However, it is important to note that players will still take damage, but they cannot die, adding an interesting layer of strategy and fun to the game. Additionally, there is a 'Mortality' spawnable that reverts the player back to a mortal state, giving users control over their gameplay experience.

The modification has undergone recent updates, including fixes for a black screen issue that occurred after dying while in mortal mode and improvements in logic. With over 30,000 downloads, this mod has gained popularity among players looking for a different approach to Bonelab. The mod is visually supported by the artwork of KaratePie, ensuring an engaging aesthetic experience alongside its gameplay enhancements.