Undertale Boss Battles Script !!link!! Jun 2026

// Sans special: if you attack, he dodges. if (boss.name === "Sans") damage = 0;

import pygame

Scripts control mid-battle dialogue, usually triggered by HP thresholds or turn count: Undertale Boss Battles Script

❌ → Player can’t get hit ✅ Clamp soul position every frame

You can customize stats directly in the Monster Script . Using a site like TrueTews, you can "make sure you have a nice balance of human and monster stats...feel free to increase the pacifism...bosses should have high HP with a decent attack power". You would do this by editing the def and atk variables. // Sans special: if you attack, he dodges

toriel_attack() let pattern = []; if (player.hp <= 3 && !toriel.has_warned) toriel.say("I apologize, my child."); toriel.aim_offset = 20; // pixels away from soul toriel.has_warned = true;

function endAttack() battleState = "MENU"; if (boss.hp <= 0) winBattle(); else if (player.hp <= 0) loseBattle(); You would do this by editing the def and atk variables

In your GameMaker Object (obj_boss), you need these core variables:

// Create Event attack_phase = 0; // 0 = Intro, 1 = Phase 1, 2 = Transition, 3 = Phase 2 attack_timer = 0; // Countdown to next attack current_attack = "none"; hp = 1000; max_hp = 1000; mercy = 0;

// Subtract health, play hurt sound, maybe add invincibility frames hp -= 10; audio_play_sound(snd_hurt, 0, false); if (hp <= 0) game_end(); instance_destroy(other);

Undertale's boss battles are a testament to the game's creative and engaging design. By exploring the script behind these battles, we can gain a deeper understanding of the game's mechanics and the developers' thought process. Whether you're a game developer or simply a fan of Undertale, analyzing the boss battles can provide valuable insights into game design and storytelling.