Now, go write your script. And stay determined. Do you have a specific bug in your Undertale battle script? Or are you looking for the exact JSON file for a specific boss like "Jevil" from Deltarune? Let us know in the comments below.
// Condition 2: Is HP below 30%? if (hp < max_hp * 0.3) can_spare = true; Undertale Boss Battles Script
For developers, modders, and fan-game creators, replicating that magic starts with one critical search term: . Now, go write your script
// Script: karma_effect() function apply_karma(damage){ // Normal i-frames = 60 frames. Karma removes them. if (object_player.invincibility > 0){ object_player.invincibility = 0; } object_player.hp -= damage; // Poison drain object_player.karma_drain = 5; } A boss script isn't just logic; it’s the bullet hell renderer. In Undertale , bullets are typically objects stored in a ds_list . Here is a script to spawn a Mettaton-style laser grid: Or are you looking for the exact JSON
Your script isn't just a list of attacks—it is a dialogue between the player and the machine. Make it fair, make it surprising, and when the player finally beats your boss, make them feel like they just survived a war.