diff --git a/Game-Emulators.md b/Game-Emulators.md
index 091d3ea..99ef343 100644
--- a/Game-Emulators.md
+++ b/Game-Emulators.md
@@ -11,7 +11,13 @@ Seems standalone emulator can be more performant
 ## How to add new core to RetroArch?
 
 Basically all you need is a `action.config` file with a link to the games folder and core to use for that games.
-
+```
+ROM=/home/cpi/games/[name of the folder with games for specific system]
+ROM_SO=/home/cpi/apps/emulators/[Name of the core snes9x_libretro.so]
+EXT=[extensions of the ROMs (SNES is sfc,zip,smc, Gameboy gb,gbc,zip] LAUNCHER=retroarch -L
+TITLE=[Title to display by Launcher]
+SO_URL=[core will be downloaded from there if doesn't found by path from ROM_SO]
+```
 More details https://forum.clockworkpi.com/t/how-to-add-new-emulators-gameboy-snes-etc/862