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Game Free to play App 5249380

Leonard Sibelius

Walt Parkman · released Nov 11, 2026

I'm 71. I spent forty years in cubicles building software systems that all were retired. Use of AI was forbidden. This is my memoir, and I built it with AI. Earn AI powers from five dancing AI agents, race go-karts, play chess and Go, and create movies about dancing.

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Leonard Sibelius

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Follow Data updated 18h ago
Price
Free
US store
Reviews
—
no reviews yet
Playing now
—
not sampled yet
24h peak
—
all-time seen —
Followers
—
Steam community hub
Owners (est.)
—
from review count
Revenue (est.)
—
gross, lifetime · how
YouTube activity
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videos · 30 d
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creators
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views · 1 y
Twitch activity
—
avg viewers · 30 d
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hours watched · 30 d
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streamers · 30 d

Product info

from Steam's PICS · read 1h ago
Change number
40,923,289 · seen 1h ago
Public build
26,650,907 · Nov 13, 2026 (1h ago)
Operating systems
windows
Architecture
64-bit
Install size
10 GB · 9.3 GB download
Install folder
Leonard Sibelius
Controller support
—
Metacritic
—
Homepage
—
Release state
released
Community
hub

Steam Deck

Unknown

No Deck test results published.

Branches · 1

every build Steam serves for this app
BranchBuildUpdatedDescription
public 26,650,907Nov 13, 2026 · 1h ago

Build history

every build id we have seen on a branch (history starts with our first read)
BuildBranchReleasedFirst seen
26,650,907public Nov 13, 2026 17:291h ago
26,638,598public Nov 13, 2026 07:5110h ago
26,637,814public Nov 13, 2026 07:0211h ago
26,627,349public Nov 12, 2026 20:4521h ago
26,597,490public Nov 11, 2026 17:391d ago

Depots · 3

content of the public branch
DepotNameOSLanguageDLC / sharedSizeDownloadManifest
5249381 all 10 GB9.3 GB 1113248355354628977
228989 windows shared from #228980 ——
228990 windows shared from #228980 ——

Launch options · 1

ExecutableOSDescription
SibeliusGame.exe windows 64-bit

Languages · 1

LanguageInterfaceFull audioSubtitles
English ✓✓✓

Packages · 0

all packages
No packages recorded yet.

Bundles · 0

all bundles
Not part of any bundle we know.

Change numbers

all changes
#40,923,289 · 1h ago#40,904,406 · 10h ago#40,903,251 · 11h ago#40,889,001 · 21h ago#40,844,936 · 1d ago#40,842,683 · 2d ago

Updates · patch notes

Steam announcements tagged as patch notes, linked to the public build they followed
all games →
WhenNoteBuildUpdate size
Nov 13, 2026 Update 2.5.5: remix the dances
Press F on an agent and use the new tabs. WHOLE DANCE, ARMS and LEGS let you give her the arms of one dance and the legs of another. Add SPEED (0.5x to 2x) and MIRROR, and she keeps your remix the next time you visit.
26,650,907 +233.6 KB
Nov 13, 2026 Updates 2.5.2 to 2.5.4: an easier start, graphics settings, and a clue
Kaia now hands you her power the moment you ask. No slot machine to beat first. Graphics settings: the game picks settings for your computer the first time it starts. Press M and open GRAPHICS to turn shadows, lighting, reflections and effects up or down. Lost another agent's slot challenge? The AI Temple, behind a hidden door near Kaia (hold V), has plenty of sauce. Until you have Compile, press
26,650,907 +233.6 KB