If you are looking to "make" a feature by updating your version or developing a mod, consider these highlights from the Peglin Version History :
To add a feature to (specifically referenced by your file version v0.8.6.zip ), you can focus on core mechanics or quality-of-life improvements that align with the community's popular requests and the game's official development roadmap. Popular Community Feature Requests Peglin.v0.8.6.zip
Since you have a .zip file (likely the PC version), you can explore the Peglin Steam Community for modding support. Players often use to inject custom code into Unity-based games like Peglin to create new orbs, relics, or UI features. If you are looking to "make" a feature