Overview
Ishanekon: World Shapers is the (probably) biggest free Indie TTRPG with over 2,500 character options. It has been mainly developed by Jan Luyken, aka Blaze Reason, with the aim of creating a game that can compete (if not surpass) the current biggest games on the market while remaining affordable for anyone. With its easily adaptable rules and wide range of options, from beginner-friendly to highly complex, it is designed to satisfy the needs of almost any story and play style.
Description
From epic fantasy and sci-fi to mundane humans facing everything from common threats to cosmic horror, Ishanekons: World Shapers’ modular design lets you easily adjust the rules to help you experience your stories. This game is designed with the idea that you bring the flavor, and the mechanics help you bring it to life. The 10 Archetypes with over 200 Sub-Archetypes, 1000+ Abilities, 600+ Talents, 300+ items and upgrades, and more allow you to build anything from a simple cat to a city-destroying kaiju. Role and complexity filters let you find what you need quickly while helping you avoid those features that might be too overwhelming for your liking.
System Overview & Key Features
Combat d20, Skill d10
The core of combat is built around d20 attack and defense rolls with modifiers that try to beat the enemy's Evasion and DR Power, respectively. Skills, on the other hand, are rolled with d10s, creating somewhat of a dice-based separation between combat and non-combat.
Cinematic Actions
While IWS has a solid tactical core that will satisfy most war gamers, it also comes with so-called “Cinematic Actions”. These allow narrative-driven actions, independent of what the rules say your character can do, balancing the rule of cool so that role players have a rules-light way to interact with the action, bringing the best of both worlds.
Flexible Character Customization
This system allows you to mix and match all sorts of Archetypes, features, and Abilities. It encourages such behavior and does not introduce any blocks, such as stat requirements. All sorts of interesting mechanical and flavor combinations open up once you start experimenting. This is also true for items. An extensive upgrade and crafting system exists that can turn any old blade into whatever you want.
Carefully Balanced
The system's core math has been calculated to ensure that every character option is viable. Breaking the game is not trivial, and you will feel strong, no matter if you are a martial, caster, or something in between. Every weapon and armor type can be wielded to great effect, and each Stat has its uses. “Optimal play” should never get in the way of what fits your character narratively.
Regular Patches
As a digital product, IWS can be easily expanded. Monthly patches bring new content, buff weak options, and nerf broken combos to help this game evolve and become the best it can be. New digital tools are also added and expanded, such as online character sheets and an encounter calculator.
Build Your Own Creatures
The website comes with more than 100 creatures, each of which has Level 0 to 15 versions, but creature templates and an online creature builder help you as the GM to create whatever monstrosities you want to throw at your players. All those 2,500 options can also be used for whatever you cook up.
Additional links
world-shapers.com 
https://world-shapers.com/ - Official website
world-shapers./resources/adventures https://world-shapers.com/resources/adventures/ - Free adventures
Super short rules https://world-shapers.com/guides/beginner-introduction/super-short-rules/ - Get started with Ishanekon fast