Hidden CartridgeThe Indie Game Showcase Account

Notes from the road

Development journal

The original articles and publication dates remain available as the site moves into its new identity.

Making Offline Progress Safe

How server time, combat limits, boss stops, and duplicate-reward protection make away progress trustworthy.

When Two Browser Saves Disagree

How revisions, recovery copies, active-device control, and active-tab locking keep an older browser from overwriting a Warden.

Building Accounts Without Turning the Game Into a Login Screen

How The Unfinished Kingdom uses six-digit email codes to protect a Warden without placing a password wall before the game.

Why Octarine Online is becoming Hidden Cartridge

Why the browser game collection is moving from Octarine Online to Hidden Cartridge under The Indie Game Showcase.

Building readable retro space combat in the browser

How Nullspace Arena combines inertial ship movement, readable enemy warnings, ten-wave pacing, and a changing arena boundary without becoming bullet-hell clutter.

Building small browser games that load fast

The first Octarine Online dev log: building free retro browser games and early recovered builds that load fast, work on mobile, use lightweight pixel art, and stay accessible.

Making Active Play Matter in an Idle RPG

How The Unfinished Kingdom balances automatic browser idle RPG progress with short active sessions, timed skills, equipment decisions, and meaningful setbacks.

Designing Infinite Progression Without a Full Reset

How The Unfinished Kingdom approaches infinite idle RPG progression without erasing the Warden through a complete prestige reset.

Why The Unfinished Kingdom Is a Browser Game

Why The Unfinished Kingdom is a no-download browser RPG designed for phones, tablets, laptops, desktops, and optional PWA installation.

Building an Infinite Idle RPG Inside a Haunted Arcade Cabinet

How The Unfinished Kingdom became a browser idle RPG about Cabinet 14, the Warden, continuous progression, and short active sessions.