Play : Sprunki Phase 4: Decay by the Day 🕹️ Game on Kiz10

Play Sprunki Phase 4: Decay by the Day Online

Rating:

9.00 (155 votes)

Released:

05 Aug 2025

Last Updated:

05 Aug 2025

Technology:

HTML5

Platform:

Browser (desktop, mobile, tablet)

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???? Decay Is Not Just Visual. It’s Inside the Beat.

Your screen flickers. You hear a broken version of your favorite menu theme. It’s off-pitch. Slower. Something’s wrong.

This isn’t the Sprunki you remember.

Welcome to Sprunki Phase 4: Decay by the Day, a horror rhythm experience where the music itself is infected—and so is everything around you. There’s no clear goal. No reset button. Just the pulsing terror of every note as the game mutates in real time.

???? You Think You Know the Rules. You Don’t.

You press the arrows. They respond… until they don’t.
The chart changes mid-song.
Sometimes the game stops playing the track and just hums.
Sometimes Sprunki talks back.

This is rhythm horror. Designed not to scare with jumps—but to unsettle your trust in everything you think a music game should do.

???? Songs That Twist Your Mind

Song 1: “Dead Keys” – keys stick, delay rises, background melts
Song 2: “Half Alive” – a duet with a character who doesn’t have a sprite
Song 3: “In Memory of .EXE” – files from earlier phases reappear, corrupted
Song 4: “Decay by the Day” – arrows reverse, BPM rises to 260, silence follows

Each round breaks the last rules. Expect nothing consistent.

???? You’re Playing… If You Can Call It That

Arrow keys work 70% of the time
Your combo counter sometimes lies
The background art responds to your fails
During “Decay by the Day,” the pause button vanishes

You’ll second guess your inputs. That’s the point.

???? The Game Starts Listening Somewhere between songs, you’ll swear you hear whispering. It’s not in the track. It’s under it.

In Level 3, if you leave the screen idle, Sprunki begins mouthing words that don’t match the beat. The longer you wait, the louder he gets.

By Level 5, he’s speaking backwards. Some players recorded it, reversed it, and found phrases like “we are still inside” and “the beat is a cage.” No one knows who wrote those lines.

????️ Sprunki’s Voice Files Change The audio files themselves begin to corrupt. His vocals slow down unevenly. Echoes appear where none were programmed. Some phrases stutter, then snap back as if censored.

You’re not just playing a chart anymore. You’re uncovering something hidden in the waveforms.

???? Game World Meltdown Moments

The background occasionally flashes your real system clock
During one section, it mirrors your keystrokes—but not the ones you just hit
A hidden song called “Quarantine” randomly activates if you lose five times in a row
In one build, if you complete the game perfectly, it shows a file path to a folder that doesn’t exist

???? When the Game Pretends to Crash There’s a moment in “Decay by the Day” where the game goes black and dumps you to a fake error screen. But you can still hear breathing. Pressing ESC doesn’t work. The only way out is to play one final chart using invisible notes—timed only by sound.

Most players fail. The screen flickers back and whispers “Too late.”

???? Sprites That Rot Sprunki’s body breaks down frame by frame across stages. In Song 1, it’s just a cracked expression. By Song 4, he’s missing entire limbs. During the final scene, he glitches between himself and… something else. Something made of wire and teeth.

Every attempt to screenshot it fails. You’ll only see static in the capture.

???? Community Theories (That Might Be Real)

Sprunki Phase 4 is actually the buried code of an unreleased mod
The game knows how long you’ve been playing other Kiz10 rhythm titles
Hidden numbers in the background spell a real-world phone number
Completing the game five times in one session makes the title screen unreadable

Nobody has verified them. But everyone who’s tried has a story.

???? Why You’ll Keep Playing Because you need to understand what’s happening. Because it’s hypnotic. Because Phase 4 dares you to look into digital decay and not blink.

And maybe, deep down, because Sprunki knows your name now.

FAQ – Sprunki Phase 4 | Kiz10

❓ Is this game safe to play?
Yes, but it’s unsettling. No actual viruses. Just very convincing glitches.

❓ Do I need to play the previous phases?
Not required—but the references will hit harder if you do.

❓ Can I win?
You can survive. That’s not the same thing.

❓ Why play on | Kiz10?
Because nowhere else will serve you psychological horror in rhythm form with this level of glitchy style. Only on Kiz10. ????????????

Sprunki Phase 4: Decay by the Day

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