Arkham Asylum is brimming with collectibles that reward exploration and keen observation. These include:

- Riddler Trophies: Green question mark items, often hidden or requiring gadget use.
- Riddles: Environmental puzzles requiring you to scan a specific object or scene.
- Joker Teeth: Destructible chattering teeth scattered everywhere.
- Chronicle of Arkham: Stone plaques that reveal the asylum's dark history.
Collecting these provides XP, unlocks character bios, and contributes to 100% completion. Detective Mode is your best friend for finding them.
Compare collectibles & secrets inBatman: Arkham Origins