SteamRadar
EN
EnglishenRomânăro
Game App 2962400

Operation Darkside DX

ダークネスLAB · published by Mango Party, Mango Party News · released Jul 10, 2026

Play as the Forren Foundation’s chief scientist to capture, study, and convert the Holy Core Battlemaidens into your loyal followers!

StoreSteam store
Promote

Operation Darkside DX

Shown at the top of the developers list with a yellow Promoted badge — up to 5 promoted games at a time, in a rotating order. Clicks go straight to its Steam store page.

Period

No account needed — the receipt and the confirmation go here. With a free account on this address you can also watch views and clicks live.

Secure payment by Stripe. The promotion starts as soon as the payment clears and a slot is free.

 ContactContact developer
Follow
Data updated 2h ago · YouTube searched 2d ago
Price
$8.99
US store
Reviews
82%
139 · Very Positive
Playing now
2
sampled 17h ago
24h peak
2
all-time seen 4
Followers
—
Steam community hub
Owners (est.)
~4.2K
2.1K – 6.7K
Revenue (est.)
~$20.6K
gross, lifetime · how
YouTube activity
—
videos · 30 d
—
creators
—
views · 1 y
Twitch activity
—
avg viewers · 30 d
—
hours watched · 30 d
—
streamers · 30 d

Product info

from Steam's PICS · read 4d ago
Change number
40,671,933
Public build
24,292,697 · Jul 20, 2026 (3mo ago)
Operating systems
windows
Architecture
64-bit
Install size
5.2 GB · 2.3 GB download
Install folder
Seikaku
Controller support
—
Metacritic
—
Homepage
—
Release state
released
Community
hub · stats

Steam Deck

Playable

Tested Feb 21, 2026 on build 20,204,093

  • !Controller glyphs do not match deck device
  • !Text input does not automatically invokes keyboard
  • !Interface text is not legible
  • ✓Default controller config fully functional
  • ✓Default configuration is performant

Branches · 1

every build Steam serves for this app
BranchBuildUpdatedDescription
public 24,292,697Jul 20, 2026 · 3mo ago

Build history

every build id we have seen on a branch (history starts with our first read)
BuildBranchReleasedFirst seen
24,292,697public Jul 20, 2026 09:314d ago

Depots · 2

content of the public branch
DepotNameOSLanguageDLC / sharedSizeDownloadManifest
2962401 all 2.6 GB1.1 GB 5077945547888433365
2962402 all japanese 2.6 GB1.2 GB 2721331164396428178

Launch options · 1

ExecutableOSDescription
Seikaku.exe all

Languages · 5

LanguageInterfaceFull audioSubtitles
English ✓—✓
Korean ✓—✓
Japanese ✓✓✓
Simplified Chinese ✓—✓
Traditional Chinese ✓—✓

Packages · 1

all packages
SubNameBillingPrice
1054630Operation Darkside DX Store or CD key $8.99

Bundles · 2

all bundles
BundleGamesBundle discountPrice
Super Heroines bundle3 -10%$26.07
Operation Darkside Deluxe Edition1 -10%$11.68

DLC in product info · 1

includes DLC not sold separately
Operation Darkside DX - Artbook

Updates · patch notes

Steam announcements tagged as patch notes, linked to the public build they followed
all games →
No patch notes seen yet for this game.