The most reliable way to own the game is to purchase a used physical copy for PC, Xbox 360, or PS3. Where to Find it Safely
A darker storyline where Manhattan is under a symbiote invasion.
Open-world web-swinging on PC/Consoles, and a unique 2D "Metroidvania" style on the Nintendo DS. Spider-Man Web of Shadows is way better on the DS!
Approximately 10 hours for the main story and up to 20 hours for completionists.