ULTRAKILL Prelude

ULTRAKILL Prelude is a fast-paced retro FPS where you blast through industrial arenas, chain stylish attacks, and survive by staying aggressive. Move quickly, dodge enemy attacks, swap between powerful weapons, and clear each level with speed, accuracy, and style.

• Fast retro-style first-person shooter experience
• Solo action focused on speed and skill
• A tutorial, multiple Prelude levels, and secret content
• Movement-heavy combat with jumping, sliding, dashing, and wall jumps
• Style scoring based on fast and creative combat
• Weapon variations that change how each weapon feels
• Boss fights and enemy encounters throughout the demo
• Two difficulty options in the original Prelude release
• Configurable controls and an interactive tutorial
• Open directly in your browser with no download required

• Story Levels – Fight through the Prelude stages and clear each level as quickly and stylishly as possible.
• Tutorial – Learn the basics of movement, aiming, shooting, jumping, and combat before entering the main levels.
• Secret Missions – Discover hidden content by exploring carefully and looking beyond the obvious route.
• Score Runs – Replay levels to earn better ranks by improving your time, eliminations, style, and overall performance.

Use a small but powerful arsenal designed for fast combat and creative combos, including:

• Revolver
• Shotgun
• Nailgun
• Weapon variations
• Alternate firing styles
• Melee attacks
• Explosive attacks
• Close-range finishers

Each weapon rewards different timing and positioning. Switching between weapons during combat helps you build style and handle different enemy situations.

ULTRAKILL Prelude is built around constant movement. Standing still makes fights harder, while aggressive movement helps you avoid attacks, control the arena, and keep your style score rising.

Core skills include:

• Sprinting through arenas
• Jumping over hazards
• Sliding under attacks
• Dashing away from danger
• Wall jumping through levels
• Swapping weapons quickly
• Parrying attacks
• Staying close to enemies when needed
• Clearing rooms as fast as possible

The faster and cleaner you play, the better your final rank can become.

Each level rewards performance with a rank based on how well you played. Improve your score by finishing faster, taking less damage, using stylish combos, and defeating enemies efficiently.

Progression can include:

• Completing Prelude levels
• Finding secret areas
• Improving level ranks
• Unlocking weapon variations
• Learning boss patterns
• Practicing faster routes
• Mastering advanced movement
• Chasing higher style scores

Replay levels to sharpen your aim, movement, and combat flow.

• WASD — Move
• Mouse — Look and aim
• Left Click — Fire weapon
• Right Click — Alternate fire
• Spacebar — Jump
• Shift — Dash
• Ctrl — Slide
• F — Punch or melee
• R — Switch weapon variation
• 1 / 2 / 3 — Switch weapons
• Esc — Pause the flashcard

Controls may vary depending on the browser version and can usually be adjusted in the options menu.

ULTRAKILL Prelude is a short but intense preview of ULTRAKILL’s fast combat. It combines old-school FPS action, stylish combat scoring, quick movement, boss fights, and replayable levels into one high-energy browser experience. Learn the movement, master the weapons, discover secrets, and keep replaying levels until every run is faster and cleaner.