Free Sonic RPG / Final Fantasy-Style Games Online

No official free Sonic RPG matches Final Fantasy's scope. However, these fan/indie projects come closest:

Major Fan Games (PC, Free Download)

• Sonic Robo Blast 2 (SRB2): 3D platformer (Doom engine) with RPG mods (SRB2Kart, Sonic RPG mod adds stats, equipment, turn-based battles). Active community, netplay.
• Sonic World / Sonic World DX: 3D adventure fangame; large worlds, multiple characters, light RPG elements (level-ups, skills).
• Sonic Chrono Adventure / Sonic Before/After the Sequel: 2D fangames by LakeFeperd; polished, story-driven, not RPG but high quality.

RPG Maker / Engine Projects

• Search Game Jolt / Itch.io for "Sonic RPG" — many short RPG Maker / Unity / Godot projects. Quality varies wildly; check comments/updates.
• Sonic RPG: The Legend of the Seven Chaos Emeralds (RPG Maker XP, incomplete but playable).

Browser / Mobile (Light RPG Mechanics)

• Sonic Dash / Sonic Forces: Speed Battle: Endless runners with character unlocks, upgrades, RPG-lite progression.
• Poki / CrazyGames: Search "Sonic RPG" — simple HTML5 turn-based fan battles.

Official Low-Cost Access

• Sega Genesis Classics / NSO / Steam: Sonic 1, 2, 3&K, CD, Spinball — not RPGs, but core series.
• Xbox Game Pass / PS Plus: Often include Sonic Frontiers (open zone, skill tree, light RPG).

Caution: Download fan games only from official dev sites (srB2.org, Game Jolt verified) to avoid malware. No project fully replicates a Square Enix-scale JRPG.