Long before interest in Batman games erupted with the Arkham Asylum series, Batman Begins was showing us what a proper Caped Crusade looked like.
Inspired by the 2005 Christopher Nolan film, Batman Begins was and is still noteworthy for following the movie character's technique in its approach to combat--you didn't just beat down thugs with martial arts, you used fear tactics and stealth maneuvers. You threw smoke grenades and used HF (High-Frequency) Transponders to summon flocks of bats. Much like the film, there was a very real psychological component to the game--on that note, Cillian Murphy's Scarecrow is still terrifying.
So too were the locations compelling, each with their own identity. Whether it was the sewers and waterfront of Gotham City, its high-rises and skyscrapers, the monastery in the Himalayan Mountains where the League of Shadows dwelled, or the eeriness of the Nolan-verse Arkham Asylum, every single location was fun to explore and navigate.
Not to mention the Tumbler. To this day, it's still the greatest take on racing through the streets of Gotham in the Batmobile.