# How do I mod the game?

**URL:** <https://discourse.cataclysmdda.org/t/how-do-i-mod-the-game/15672>\
**Category:** The Toolbox\
**Created:** [June 12, 2018, 5:06am UTC](https://discourse.cataclysmdda.org/t/how-do-i-mod-the-game/15672 "2018-06-12T05:06:19Z")\
**Posts on this page:** 1\
**Page:** 7

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**Author:** ![mlangsdorf](https://sea2.discourse-cdn.com/flex016/user_avatar/discourse.cataclysmdda.org/mlangsdorf/32/2462_2.png) [@mlangsdorf](https://discourse.cataclysmdda.org/u/mlangsdorf)\
**Post date:** [July 29, 2018, 2:26am UTC](https://discourse.cataclysmdda.org/t/how-do-i-mod-the-game/15672/122 "2018-07-29T02:26:04Z")

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so if you look at the feral predator definition in data/json/monsters.json, you see it does define a special monster inside it’s on json.

You probably just had a syntax error in the JSON. It happens, and they can be hard to spot.

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