What coding language does Undertale use?
Undertale is developed using GameMaker Studio, which primarily uses GML (GameMaker Language). It's a pretty awesome tool for indie devs!
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Actually, Undertale uses GML, which is the scripting language for GameMaker Studio. Simple and effective for indie games!
Undertale's code is written in GameMaker Language (GML) because it was made with GameMaker Studio.
Toby Fox used GameMaker: Studio to create Undertale, so it's all built with GML (GameMaker Language).
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