Vs Susie and Ralsei Simulator (Version 3)

Duel your own Dark World allies in this expanded Deltarune fan battle. Dodge Susie's heavy axe strikes and Ralsei's magical scarf spirals in Version 3.

How to Play ↓

A keyboard is recommended. Touch controls depend on the game version.

How to Play Vs Susie and Ralsei Simulator (Version 3)

Face your trusted companions in an unexpected tactical duel in Vs Susie and Ralsei Simulator (Version 3), crafted by creator JustA_Dog. In Toby Fox's Deltarune, Kris, Susie, and Ralsei form the legendary 'Three Heroes' destined to banish the Angel's Heaven. This fan-made encounter flips that dynamic upside down, placing you alone as Kris facing both Susie and Ralsei across the combat divide. If you appreciate speculative Deltarune battles such as the chilly showdown in DELTARUNE Chapter 7A Penultimate Carol Boss or the party combat mechanics in Deltarune Battle Simulator, this Version 3 release delivers refined graphics and dynamic combo attacks.

Navigate your combat options and steer the red SOUL using the Arrow Keys. When menu options appear, press Z or Enter to confirm your choice, and tap X to cancel or skip dialogue exchanges. During Kris's turn, you can select FIGHT to launch a melee slash against either Susie or Ralsei, or use ACT commands to negotiate, tease, or distract them.

During defensive rounds, Susie and Ralsei coordinate dual-threat attack patterns. Susie deploys heavy, sweeping axe slashes, crushing bone wedges, and brutal physical projectiles that dominate the edges of the box. Simultaneously, Ralsei summons swirling scarf ribbons, gentle healing dummy decoys, and spinning magic stars that float across the center. Balancing your attention between Susie's violent sweeping arcs and Ralsei's intricate bullet geometries is essential for survival.

In this updated Version 3 build, developer JustA_Dog expanded combat outcomes: you can now focus your attacks to incapacitate Ralsei first, fundamentally altering Susie's behavior and unlocking specialized berserk dialogue and attack routines.

Navigating this duel requires treating Susie and Ralsei as distinct threats with complementary mechanics. Susie's physical axe swings create wide area denial, forcing you into the center of the arena where Ralsei's delicate floating magic ribbons converge. Learning when to hold ground and when to perform high-speed perimeter dashes is the hallmark of a master Lightner.

The dual boss dynamic creates a continuous tug-of-war between high-impact physical force and sweeping magical projectiles. While Susie unleashes wide vertical axe cleaves that sweep across the arena, Ralsei summons rotating rings of pacifying spell sparkles that expand outward from the center. Grazing your heart closely against Susie's descending axe blades generates bonus Tension Points (TP), which you can immediately spend on defensive barrier spells or tactical ACT options to soothe the combatants.

Coordination is vital because the bosses alternate their attacks in sync with the musical tempo. When Susie winds up for a heavy Rude Buster shockwave, Ralsei frequently blankets the safe zones with soft healing dust clouds that temporarily distort the arena boundaries, testing your spatial composure under pressure.

Combat Navigation and Dialogue Key Scheme

KeyAction
Arrow KeysNavigate combat menus and steer SOUL through bullet patterns
Z / Enter KeysConfirm action, execute FIGHT strike, progress dialogue
X KeyCancel menu choices, return to previous tier, fast-forward text
SpacebarAlternate confirm / dialogue advance key

Hold X during dialogue sequences to rapidly skip directly to the combat phase if you are practicing repeated boss attempts.

About Vs Susie and Ralsei Version 3

The concept of Kris battling their own party members has been a recurring fascination in the Deltarune fandom since Chapter 1's iconic clash where Susie teamed up with Lancer. Developer JustA_Dog created Vs Susie and Ralsei to explore a full-fledged boss fight where both primary companions stand united against Kris.

Over several major revisions leading up to Version 3, the creator dramatically overhauled the encounter. Version 1 established the core duel mechanics; Version 2 introduced refined attack timings and updated background art; and Version 3 added complete target independence, allowing players to defeat Ralsei, triggering custom animations and enraging Susie into high-speed assault patterns.

The game showcases expressive character sprites, authentic Deltarune battle sound effects, and faithful chiptune renditions of classic Deltarune battle themes. The interplay between Susie's brutish strength and Ralsei's delicate spellcasting provides a rich mechanical contrast that feels right at home in Toby Fox's universe.

The project received glowing feedback for its visual charm and smooth 60 FPS performance, offering fans an engaging glimpse into how a multi-opponent battle against key protagonists could play out.

In Toby Fox's storytelling, Susie and Ralsei represent complementary archetypes: Susie embodies raw, untamed physical power and protective ferocity, while Ralsei symbolizes patience, compassion, and delicate magic. Facing them together forces players to appreciate the intricate balance of Deltarune's party design from an opposing perspective. Surviving their combined onslaught requires understanding both characters' unique fighting tempos and anticipating their synchronized attacks.

The combat encounter captures the unique party dynamics of Toby Fox's Deltarune Chapter 1. Creator pieguy454 meticulously animated custom battle portraits for both Susie and Ralsei, reflecting their distinct personalities: Susie's aggressive, defensive scowl and Ralsei's gentle, reluctant posture. The project received enthusiastic community acclaim for faithfully reproducing Deltarune's distinct rectangular battlebox, bullet graze particle bursts, and seamless soundtrack looping.

Version 3 Enhancements and Combat Tactics

Discover the new mechanics and tactical choices introduced in Version 3:

  • Target Selection Strategy: Choose whether to focus strikes on Susie's massive HP pool or whittle down Ralsei's lighter defenses first. Eliminating Ralsei removes his magic traps but drives Susie into an enraged state.
  • Coordinated Duo Attacks: Dodge synchronized waves where Susie's axe chops generate shockwaves along the floor while Ralsei's magic ribbons constrict the upper airspace.
  • ACT Menu Dialogue Exchanges: Experiment with diverse ACT options to discover witty banter, lore references, and humorous reactions from both party members.
  • Dialogue Fast-Forward: Hold X or tap Spacebar to speed through cutscenes and banter, letting you restart combat waves without narrative delays.
  • Enhanced Visual Effects: Version 3 incorporates updated spell glows, animated impact sparks, and smoother character idle breathing animations.
  • Solo Survival Endurance: With no party members to revive you, Kris must survive on a single health bar, making every graze and dodge critical to enduring Susie and Ralsei's combined assault.

Battle Strategies for Defeating the Duo

Outmaneuver Susie and Ralsei with these practical battle tips:

  • Take Down Ralsei First: Ralsei has significantly less HP than Susie. Focusing your FIGHT strikes on Ralsei removes his complex floating magic ribbons early, simplifying subsequent bullet patterns.
  • Prepare for Enraged Susie: If you defeat Ralsei, be ready for Susie's speed to increase. Her axe chop frequency accelerates, requiring immediate rhythmic jumps.
  • Watch for Axe Shockwave Heights: Susie's axe strikes create floor shockwaves of varying heights. Observe her windup posture to gauge whether a short tap or a full-height jump is needed.
  • Weave Gently Through Ralsei's Ribbons: Ralsei's pink ribbons follow lazy, looping arcs. Do not dash frantically; make small micro-adjustments near the center of the box to let them float past.
  • Use Dialogue Skipping for Practice: Hold X at the start of every attempt to skip directly into the first attack wave, saving valuable time during practice sessions.
  • Keep Your SOUL Centered Horizontally: When Susie and Ralsei unleash flanking attacks from opposite sides of the box, staying in the horizontal center provides equal reaction time to both threats.

Frequently Asked Questions

What new features were added in Version 3 of this fight?

Version 3 introduced the ability to defeat Ralsei separately, added completely new attack patterns, improved visual sprite animations, and polished collision hitboxes for a smoother experience.

Can I defeat Susie and Ralsei without attacking?

While you can use ACT options to interact with them and see unique dialogue, the primary win condition in this version involves reducing their HP bars through precision FIGHT commands.

Can I play this game on my smartphone?

The game can run in modern mobile web browsers, but navigating tight bullet patterns between dual bosses is substantially easier using physical desktop keyboard arrow keys.

What happens if I defeat Ralsei before Susie?

Defeating Ralsei triggers emotional dialogue from Susie, who becomes enraged. Her attack frequency speeds up, but you will no longer have to dodge Ralsei's magic ribbon patterns.

How do I skip the opening dialogue?

Hold down the X key or tap the Spacebar when dialogue text appears to fast-forward through conversations and proceed directly to combat.

Who created this Deltarune fan battle?

The project was developed by independent community creator JustA_Dog as a creative exploration of a hero-versus-hero boss battle in the Deltarune universe.

Can I use healing items during the battle against Susie and Ralsei?

Yes! On Kris's turn, you can select the ITEM menu to consume restorative rations such as Dark Candy to heal your HP pool before enduring the next combination attack wave.

Does this battle feature the official Deltarune Chapter 1 music?

Yes. The battle features Toby Fox's energetic combat theme 'Rude Buster' along with orchestral motifs from 'Field of Hopes and Dreams', perfectly complementing the high-tempo party duel.

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