Update README.md

README.md

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 # Napoleon Total War: Intel 12th-gen Patch Tutorial
-*A guide on how to patch Napoleon Total War to run on Intel 12th-gen processors, such as the i9-12900k which NTW has been known not to be able to boot on up until now due to DRM issues.*
+*A guide on how to patch Napoleon Total War to run on Intel 12th & 13th gen processors, such as the i9-12900k which NTW has been known not to be able to boot on up until now due to DRM issues.*
 
 
 We will be:
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 #### Fire up the game & enjoy your 12th gen CPU! Thanks for reading 💖
 
+### Known issues
+
+* Multiplayer appears to require that both players use the patch. See: https://imgur.com/a/eBRXG4p . Please open an issue on our Github page if you find a solution for this https://github.com/ItsCubeTime/Napoleon-Total-War-Intel-12th-gen-patch/issues
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 ### Credits
 * Redditor LogicalMaintenance35 *for discovering the patch  https://www.reddit.com/r/totalwar/comments/za16n4/comment/j899js4/?utm_source=share&utm_medium=web2x&context=3*
 * Olliver A, *For writing this guide & recording linked video based on Logical's patch.*