How to Play Deltarune Queen Fight
Prepare to interface with the ultimate antagonist of the Cyber World in this Deltarune Queen Fight simulator. This fan-made recreation drops you directly into the climax of Deltarune Chapter 2, allowing you to challenge Queen without needing to replay the entire game. The simulator accurately recreates the party dynamics, requiring you to manage the health, magic, and actions of Kris, Susie, and Ralsei simultaneously against her technological onslaught. You can also take your party into different Dark World encounters with our Deltarune fight game.
During the defensive phase, your red soul will be placed inside the bullet board. Queen's attacks are heavily themed around technology, cursor arrows, and digital hazards. You must use precise movements to dodge incoming projectiles. Unlike standard Undertale battles where you only worry about yourself, here you are managing a full RPG party. If one character's HP drops to zero, the others must quickly act to heal them or risk being overwhelmed as your overall action economy plummets.
When it is your turn, you will utilize the full Deltarune combat menu. You can issue FIGHT commands, requiring you to perfectly time your attacks on the sliding meter for maximum damage. Crucially, you can also use MAGIC commands (which consume TP generated by grazing attacks or defending) to heal your party members or execute powerful offensive spells. Balancing your TP economy between sustaining Ralsei's healing magic and dealing damage is the absolute key to surviving this prolonged encounter.
Queen Fight Controls
| Key | Action |
|---|---|
| Arrow Keys | Use the directional arrows to move your red soul to avoid attacks. These keys are also used to navigate between Kris, Susie, and Ralsei's menu options. |
| Z Key / Enter | Press Z to confirm selections, advance the dialogue, and stop the moving cursor during the FIGHT sequence to deal critical damage. |
| X Key | Press X to cancel a menu choice. During the combat phase, holding this key will slow down your soul's movement for better dodging precision. |
| Q Key | Press Q at the beginning of the simulation to quickly skip the introductory sequence and jump straight into the battle. |
About the Deltarune Chapter 2 Queen Battle
Queen, formally known as Serial Number Q5U4EX7YY2E9N, is the primary antagonist of Deltarune Chapter 2. Her character is a hilarious yet menacing blend of a negligent mother figure and a tyrannical supercomputer. The battle against her is one of the most mechanically complex encounters in the game, forcing players to fully utilize the three-person party system, manage TP effectively, and adapt to rapidly changing attack patterns involving exploding glasses and cursor mazes.
This specific web-based recreation was meticulously coded to capture the essence of that standard encounter. The developer actively updated the project to ensure that the party mechanics function correctly—most notably resolving an early, major bug that caused Ralsei to create infinite clones of himself when using certain commands. They also vastly improved the ITEM system functionality to accurately reflect the source material. It includes the authentic visual assets, the driving electronic soundtrack, and the signature dialogue style that made the original boss so memorable.
It is important to clarify that this simulator represents the standard, ground-level RPG battle against Queen. It does not include the subsequent "GIGA Queen" arcade-style boxing match phase, nor does it feature the Acid Shield mechanic from other specific encounters. This project is focused entirely on the traditional bullet-hell dodging and party management mechanics that define the core Deltarune combat experience.
Queen's Attacks and Battle Mechanics
Queen's offensive capabilities are relentless and digitally themed. You will be forced to dodge flying wine glasses that shatter into smaller projectiles, tracking cursor arrows, and rapid barrages of digital pop-ups. Many of her attacks cover large portions of the screen, requiring you to find narrow safe zones. Learning the exact trajectory and speed of these projectiles is essential, as the damage can quickly deplete the HP of your party members, leading to a cascading failure if you cannot revive them in time.
A critical component of this fight is the Tension Points (TP) system. As you narrowly dodge attacks without getting hit (a mechanic known as "grazing") or use the DEFEND command on your turn, your TP meter fills. This resource is vital for survival. Ralsei requires TP to cast his indispensable healing magic, which is often the only way to recover from a devastating attack wave. Susie can also use TP to unleash powerful offensive spells that significantly shorten the length of the battle.
Furthermore, the DEFEND command is more than just a way to pass a turn. When a character defends, they take significantly less damage during the next enemy phase, and their action generates valuable TP. If one of your party members is dangerously low on HP and you lack the TP to heal them immediately, ordering them to DEFEND is often the smartest strategic choice to ensure they survive the round while simultaneously charging your magic reserves for the next turn.
Tips for Beating Queen
- Prioritize Ralsei's Survival: Ralsei is your primary source of healing magic. If his HP gets low, use items or have him Defend immediately. If he is knocked out, the entire party's survivability plummets drastically.
- Graze for TP: Do not just avoid attacks by staying far away. Intentionally move your soul very close to projectiles without touching them to "graze" them. This rapidly builds the TP necessary for your Magic commands.
- Aim for the Left Edge: When using the FIGHT command, the critical hit point is not in the center. You must press the Z key exactly when the cursor aligns with the vertical box target located on the far left side of the meter to deal maximum damage.
- Use Defend When Unsure: If you are unfamiliar with an incoming attack pattern and fear taking massive damage, commanding your party to DEFEND will drastically reduce the penalty for getting hit while generating TP.
- Skip the Intro for Practice: The creator kindly included a shortcut. Press the Q key to skip the introductory dialogue so you can immediately get back into the action after a defeat.
Deltarune Queen Fight FAQ
Does this simulator include the giant GIGA Queen mech battle?
No, this simulator specifically focuses on the standard, ground-level RPG encounter where Kris, Susie, and Ralsei fight Queen directly. The Punch-Out style arcade sequence featuring GIGA Queen is a completely different game mode not included in this project.
Why did Ralsei make infinite clones of himself?
If you experienced a bug involving infinite Ralsei clones, you were likely playing a very early, outdated version of this project. The developer explicitly addressed and fixed this major cloning bug in their first update patch, ensuring the party system works perfectly.
How do I deal the most damage with the FIGHT command?
Unlike some Undertale fights where the target is centered, Deltarune's attack meter requires you to hit the Z key precisely when the sliding cursor aligns with the vertical target box on the far left side of the screen to execute a critical strike.
How do I use Ralsei's healing magic?
To use Magic, you must first generate TP (Tension Points) by either grazing enemy attacks or using the Defend command. Once you have enough TP, select the MAGIC option on Ralsei's turn and choose the appropriate healing spell.
Can I play this simulator on a smartphone?
Because this battle requires complex, simultaneous inputs to manage the party, generate TP, and dodge attacks precisely, it is designed for a physical keyboard. Playing on a mobile touchscreen is highly unadvisable and unsupported.
What does the Q key do?
The Q key is a quality-of-life shortcut implemented by the creator. Pressing it allows you to instantly skip the introductory sequence and dialogue, which is very helpful when you are repeatedly restarting the fight to practice.
