The UI in Rondo of Blood is straightforward and provides all necessary information at a glance. At the top of the screen, you'll find several key indicators:

- Richter's Health Bar: Displays your current HP. Depleting this results in a Game Over.
- Hearts: Represents your current heart count, used to power Sub-Weapons and Item Crashes.
- Sub-Weapon Icon: Shows the currently equipped sub-weapon.
- Score: Your accumulated points, primarily for bragging rights and extra lives at certain thresholds.
- Time: A countdown timer for the current stage. Running out of time also results in a Game Over.
- Stage Name: Indicates the current stage you are playing.
Keeping an eye on these elements is crucial for strategic play, especially your health and heart count for sub-weapon usage.