How to Play DEVICE_KNIGHT
Click inside the game window to start. Control your red SOUL to dodge the Knight's unpredictable sword strikes and dark magic attacks. Learn the complex patterns to survive this high-speed, challenging fan encounter.
Game Controls
| Key | Action |
|---|---|
| Arrow keys | Move your soul |
| Z / Enter | Confirm / Interact |
| X / Shift | Cancel / Focus |
Remember to click the game window first to enable keyboard controls.
What is the DEVICE_KNIGHT Simulator?
DEVICE_KNIGHT, also known as the Black Knife Simulator, is a fan-made browser recreation of the Roaring Knight boss fight from Deltarune Chapter 3. Often compared to tools like Bad Time Simulator, it provides a streamlined environment dedicated purely to practicing intense bullet hell patterns without any RPG downtime.
Practice Modes
- Normal Mode: Experience the standard, unforgiving battle sequence against the Knight.
- Practice Mode: Select specific attacks to drill your muscle memory until you perfect them.
- Hitless Mode: The ultimate challenge—survive the entire encounter without taking a single point of damage.
- Endless Mode: See how long you can last against a randomized, unending barrage of the Knight's attacks.
Tips for Survival
- Use Practice Mode First: Do not jump straight into a full run. Isolate the hardest attacks in Practice Mode and figure out the safe zones.
- Watch the Weapons: Keep your eyes on the Knight's blade telegraphs to anticipate the angle and speed of sweeping attacks.
- Micro-Dodging: Use small, precise taps of the arrow keys instead of holding them down to avoid sliding into adjacent hitboxes.
- Stay Centered: Whenever possible, return to the center of the battle box after an attack finishes to give yourself maximum reaction time for the next wave.
Frequently Asked Questions
Is this the same as the FULL Roaring Knight remake?
No. While both are Deltarune fan games based on the same character, DEVICE_KNIGHT is a distinct project from the FULL Roaring Knight remake. DEVICE_KNIGHT functions more like a hardcore practice simulator (similar to Bad Time Simulator) with specific modes like Hitless and Endless.
Is the Roaring Knight an official boss?
Yes. The Roaring Knight appears as an official boss in Deltarune Chapter 3. DEVICE_KNIGHT is a fan-made browser recreation of that fight.
Why does it say DEVICE_KNIGHT?
DEVICE_KNIGHT is the project's internal name and title screen designation, potentially referencing community theories regarding the nature of the Deltarune world.
Why am I dying in one hit?
If you die in one hit regardless of your HP, check your settings. You may have accidentally enabled Hitless Mode, which causes an immediate game over upon taking any damage.
Does this game work on mobile devices?
This simulator relies heavily on precise arrow key inputs and Z/X buttons, so a physical desktop keyboard is strongly recommended for the best experience.
Is DEVICE_KNIGHT the same as Black Knife Simulator?
Yes. Black Knife Simulator is a community name used for DEVICE_KNIGHT, the browser recreation of Deltarune Chapter 3's Roaring Knight fight.















