| Feature | Free Version | Special Edition (Official) | | :--- | :--- | :--- | | | Free-to-Play with ads & in-app purchases | Paid, one-time purchase | | Ads | Yes | None | | Energy System | Yes, limits playtime | No energy system | | Story Content | Main Story | Main Story + Exclusive Sensei's Past chapter | | Grind Level | High | Lower; more gems earned naturally | | Multiplayer / Underworld | Yes | No |