ULTRAKILL: Prelude

ULTRAKILL: Prelude — Mankind Is Gone. Hell Is Full. You Run on Blood.

ULTRAKILL: Prelude is not a game that lets you stand still. V1 — a blood-fuelled machine descending into Hell — heals by soaking in enemy blood. As a result, getting close is not just tactical, it is essential. Stop moving and you die. Stay aggressive and you survive. This free browser demo of Hakita’s ULTRAKILL fuses classic shooter brutality from Quake and Doom with the style-scoring of Devil May Cry, and delivers it in five levels, a tutorial, and a secret mission. Fans of shooting games who want speed over strategy will find exactly that. Meanwhile, fans of action games who chase high scores will find the style system gives every run a second layer of purpose.

What Is ULTRAKILL: Prelude?

ULTRAKILL: Prelude is the free playable demo of ULTRAKILL, developed by Hakita and ported to browser by Cake Logic. It contains a tutorial, five main levels, and a secret mission. The full game — currently in Steam Early Access — expands into three acts and over 30 levels. However, the Prelude stands alone as a complete introduction to the mechanics and the world.

You play as V1, a machine that descended into Hell when blood ran out on Earth’s surface. The story is minimal by design. Furthermore, the atmosphere does the narrative work — industrial ruins, corrupted angels, and endless swarms of the dead communicate the world without cutscenes. The style scoring system, borrowed from character action games like Devil May Cry, means every kill is also a performance. Fans of survival games built around aggressive play will find the blood-healing mechanic reframes their instincts entirely.

How the Game Works

Each level places V1 in a series of arenas and corridors filled with enemies. You move through them, clearing each room to unlock the next. Combat is the primary activity, but movement is the primary skill. V1 can dash, slide, wall-jump, and maintain momentum across both open arenas and tight corridors. Stopping is usually fatal — consequently, the game rewards players who keep moving above all else.

Health restoration ties directly to aggression. Blood sprays from enemies when they die or take damage. Moving close enough to absorb it is how V1 heals. Therefore, keeping distance from enemies is self-defeating. The design forces you into close-range engagement even when range would feel safer. It is a mechanic that changes how every combat situation reads compared to conventional FPS design.

The style score adds a second dimension on top of survival. Chaining kills, varying weapons, and performing parries builds a combo multiplier. Higher style grades at the end of a level unlock weapon variations for subsequent stages. As a result, replaying levels for a better grade is as rewarding as clearing them the first time. The same score-chasing logic that drives Let’s Kill Jane The Killer players back to earlier levels applies here in a faster, more demanding form.

Features Worth Knowing

Blood-based healing system — V1 heals only by absorbing enemy blood at close range, forcing aggressive play in every encounter and making defensive strategies actively counterproductive.
Style scoring from Devil May Cry — chaining kills and varying attacks builds a style grade that unlocks weapon variations between levels, giving every run a second objective beyond survival.
Movement-first combat design — dashing, sliding, wall-jumping, and rocket-boosting are core to survival, not optional flourishes. Speed and momentum management are the primary skills the game rewards.
Tutorial, 5 levels, and a secret mission — a complete introduction to the ULTRAKILL world that functions as a standalone experience as well as a demo for the full Steam release.
Four enemy types and three bosses — Filth, Strays, Schisms, and Malicious Faces each require different approaches, and the three bosses test mastery of everything the earlier levels taught.
No downloads required — plays directly in any modern browser like all unblocked games on Granny.games, with no plugins, accounts, or installation needed.

Controls and How to Play

Basic Controls

WASD — move. Mouse — aim. Left click — shoot. Right click — alternate fire. Shift — dash. Space — jump. Ctrl — slide. E — interact. Q — switch weapon. 1–6 — direct weapon select. Note: avoid pressing Ctrl and W simultaneously, as this closes the browser tab rather than sliding in the game.

Tips for New Players

Stay close to enemies. The blood-healing system punishes distance. Therefore, the instinct to back away from a dangerous enemy needs to be replaced with the opposite — close in, absorb the blood, and sustain the fight. This feels wrong at first. However, it is the game’s central design, and resisting it makes every encounter harder than it needs to be.

Vary your weapons constantly. The style system scores variety above repetition. Furthermore, weapon swapping is part of the movement rhythm — switching between guns without losing momentum is a skill the game introduces early and rewards throughout. Players who find a favourite weapon and stick to it will clear levels, but they will clear them with lower grades than the system is built to produce.

Use the tutorial fully. ULTRAKILL: Prelude introduces mechanics that do not appear in other shooters — parrying, rail coinshots, and rocket-boosting through the air. The tutorial covers each one. Skipping it to reach the levels faster means encountering boss encounters without the tools that make them manageable. In addition, the secret mission rewards players who paid attention to mechanics the main levels only introduced.

Frequently Asked Questions

Is this the full ULTRAKILL game?

No. ULTRAKILL: Prelude is the free demo of ULTRAKILL, containing a tutorial, five levels, and a secret mission. The full game is available on Steam Early Access, developed by Hakita and published by New Blood Interactive. It currently includes the complete Prelude, two full acts, and over 30 campaign levels. The Prelude, however, is a complete experience in its own right and does not require the full game to enjoy.

Who developed ULTRAKILL?

ULTRAKILL is developed by Hakita, a solo developer. The browser port of the Prelude was handled by Cake Logic. The full game is published by New Blood Interactive on Steam, where it currently holds an Overwhelmingly Positive rating from over 140,000 user reviews.

Is it harder than a standard FPS?

Yes — and differently so. Standard FPS games reward careful positioning and controlled engagement. ULTRAKILL rewards speed, aggression, and momentum. The blood-healing mechanic means that playing cautiously is often more dangerous than playing recklessly. Players who come from tactical shooters will need to rebuild their combat instincts before the design starts to feel natural.

Is it suitable for younger players?

ULTRAKILL: Prelude contains fast-paced combat, blood effects, and stylised gore consistent with its retro FPS inspirations. The content is comparable to Doom (2016) in tone and intensity. It is best suited for players aged 16 and above. Parents should be aware that the game’s style scoring actively rewards aggressive, high-damage play in ways that younger players may find overstimulating.

Does it work on school or public computers?

Yes. The browser port runs in any standard modern browser with no plugins or installation required. However, the game’s performance benefits from a reasonably capable device — older or lower-spec computers may experience frame rate issues during the more demanding combat arenas.

More Games on Granny.games

If ULTRAKILL: Prelude left you wanting more, these titles are worth playing next:

Shooting Games — the full shooting catalog on the platform, for players who found ULTRAKILL’s fast-paced FPS combat the most compelling part.
Evil Nun: The Broken Mask — intense first-person horror with sustained enemy pressure, for players who want the close-range tension of ULTRAKILL applied to a horror setting.
Let’s Kill Jane The Killer: Don’t Go to Sleep — first-person action-horror with combat and enemy management under pressure, sharing ULTRAKILL’s aggressive play philosophy in a creepypasta setting.
Mr. Meat: Horror Escape Room — active survival under constant threat for players who want the high-pressure combat format of ULTRAKILL in a horror escape context.
Action Games — the full action catalog on the platform, for players who want ULTRAKILL’s speed and style applied across a wider range of genres and settings.