There's no scripts for an Undertale battle system, but I've seen Undertale battle systems done through events in XP, so it's possible to be done on your own. Tags: CaptainJet, CBS, RGSS2, RPG Maker VX, scripts This is your friendly neighborhood Jet here. Nick asked me to write up an article for a comparison between some popular CBS (Custom Battle Systems) scripts for RPG Maker VX.
Click link below to Download All XP Scripts.