Semi is an open-source mod loader for Enter the Gungeon.

Please note that Semi doesn't add any end user features (such as items or enemies) by itself, as its sole purpose is to load mods and provide them easy ways to add and modify content.

Semi is the successor of ETGMod (more commonly known as "Mod the Gungeon") - please read this page if you want an explanation on what and why Semi is.

ETGMod mods are currently not compatible with Semi, but you can check the Semi Mods section for ports.