Idle Browser RPG - HTML: Your Game, Your Rules!

Hi everyone, Misteremio here!

I've always wanted to make a game that anyone could not just play, but also easily change and make their own. That's why I created Idle Browser RPG - HTML. It’s a complete, feature-rich idle game contained entirely within a single HTML file that you can run anywhere, even 100% offline in your browser, on both mobile and PC.

But the coolest part? It's designed to be the easiest game to mod, ever! You don't need to know complex code. I built it specifically so you can use power of Artificial Intelligence to reinvent it in minutes.

The AI-Powered Blueprint

Forget the barrier of programming. The core of this project is simplicity and customization.

Do you want a Zombie Apocalypse theme instead of fantasy? Do you want a Magic School setting with spells? Would you rather collect interstellar spaceships instead of swords?

Just open the game's file in any text editor, paste the content into an AI like Gemini, ChatGPT, or Codex, and tell it in plain English what you want. The AI will write the new code for you. Then, you just save the file, refresh your browser, and voilà! You've just created your own game.

It's the perfect canvas for you to learn logic, play at being a game developer, or just build the idle game of your dreams without the headache.

 Key Features

Even without any mods, the game is a full-fledged idle experience right out of the box:

  • Auto-Combat & Stages: Battle your way through 500 stages across 10 Acts, including challenging, timed Boss fights.
  •  Loot & Rarity: Enemies drop unique gear with random stats, ranging from Common  to Legendary .
  •  Item Fusion (Crafting): Combine 3 unequipped items of the same rarity to synthesize a new, higher-tier item.
  •  Character Progression: Distribute stat points (+3 per level) and explore a deep Talent Tree with over 50 levels of unique offensive, defensive, and utility upgrades.
  • Pets & Companions: Adopt and equip helpful pets, like a Lucky Dog for extra gold or a Mystic Cat for bonus XP.
  •  Set Bonuses: Equipping multiple items of the same rarity unlocks powerful Set Bonuses to supercharge your hero.
  •  Ascension System: When the battles get too tough, Ascend to reset your stages and gain permanent Gems that multiply your global damage.
  •  Quality of Life: The game includes an Auto-Save feature, the ability to Customize Your Hero's Name and Avatar, and supports multiple languages (PT-BR, EN, ES).

Free Idle OFFLINE RPG - EASY EDIT is your gateway to becoming a game creator.

Download the file, have fun playing, and then let your imagination run wild with AI! Best of luck with your edits, and God bless your learning journey.

Development log

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UPCOMING UPDATES:

  • FIX TRANSLATIONS AND ADD JAPANESE LANGUAGE
  • FIX SOME PET IMAGES
  • FIX INITIAL HERO IMAGE

New Features - 21/Aug/2026

Game Name officially changed to "Idle Browser RPG"

  • Leaderboard now displays and syncs Ascends
  • Redesigned Craft System Layout with visual Input -> Output examples
  • Crafting logic reworked: always costs exactly 3 Gems per synthesis
  • Smart notification badges added to Craft System based on inventory
  • Score System: +1 score for winning battle, selling items, shop purchases, and successful crafting
  • Score Multiplier upgrade added to GEM shop (Cost doubles per level)
  • Dynamic Cost scaling on Shop Buffs (stabilizes at 7000 GP)
  • New Gold Bonus (+0.5%/lvl) and XP Bonus (+0.5%/lvl) Upgrades
  • Infinite Acts progression implemented (XP/Gold rewards capped after Act 5)
  • Damage calculation and rendering fixed to strict Integers (no decimals)
  • Audio Engine: Dynamic pitch modulation with random variation added to attack cadence
  • BGM Unlock System: Music functionality costs 50,000 GP to activate
  • Gem ATK Bonus rebalanced to +0.5% ATK per gem
  • Optimized Item Images from PNG to JPG for better performance

Soon Features and Balance

  • Potions can be purchased multiple times (stack time)
  • Quest System
  • Skills/Spells
  • Dungeons

Version v9 (old version)
(6 edits)

New Features - 19/Aug/2026

  • Leaderboard (lower points better)
  • GEM shop
  • Potions can be purchased multiple times (stack time)
  • ACT 1 - ACT5
  • Mobile Friendly
  • Boolean AutoProgress
  • Now Itens can level Up
  • New Item Rarities (Super Legendary,Divine, Celestial)
  • Now you lose all your backpack itens when you die
  • More GEMs = More %ATK 


Soon Features and Balance

  • Redesign Game CSS for intuitive experience
  • Improve Itens 
  • InGameChat (maybe)[canceled]
  • Quest
  • Skills/Spells
  • Dungeons
  • Improve Battle System
  • Rework GEM atk bonus (now 1GEM = +%5 | future 1GEM = +%0.5)