Open your chosen battle maker and initialize a new project. Define your boss’s name, Health Points (HP), Attack (ATK), and Defense (DEF). Write the initial flavor text that appears when the battle begins (e.g., "A strange presence blocks your path." ). Step 3: Script the Attacks
: Includes a library of over 800 custom community-made bosses, survival modes, and weekly challenges. Community Interaction
100% mobile-native creation, beginner-friendly, and active online community sharing project files.
The legendary indie RPG Undertale captured hearts with its unique, bullet-hell combat and emotional storytelling. For years, fans have wanted to create their own custom battles, designing unique attack patterns, dialogue, and mechanics. While PC users have robust tools like Unitale and CYF (Create Your Frisk), Android users can also experience the thrill of game development.
: You can customize dialogues with adjustable fonts, character voices, and speed settings. UnderBattles - AU Fights
Once you are satisfied, press "Play" to test your boss. You can tweak the HP, attack timing, and dialogue based on your playtesting experience. When you are ready, share your creation online for others to download and enjoy.
Physics and precise collision detection for complex bullet hells can be difficult to optimize. 3. Godot Engine (Android Editor)
You will select the character (or upload a sprite) and choose the background (e.g., Judgement Hall, Ruins).
to set up scenarios with characters from various AUs (Alternate Universes). Customization
: It supports uploading your own maps and Original Characters (OCs), making it a hub for fan creations since 2020. Other Notable Android Fan Projects UnderBattles - AU Fights
Features a tool for creating story cutscenes with custom dialog, fonts, and colors.
Several developers have built HTML5-based Undertale simulators that run directly inside mobile browsers like Chrome or Firefox.
I can guide you to the exact app or template that fits your project. Share public link
