If you acquire a digital serial number, follow these steps to activate it: client and log in. Navigate to the menu at the top. "Activate a Product on Steam..."

: A valid serial number is required to launch the game and verify that the copy is not pirated. Safe Storage

: If you registered on the game's website, your serial number may be linked to your email and Device ID (DID). 2. Prebuilt PC Serial Number Ninja Blade

I recently dug out my old DVD copy of Ninja Blade (the FromSoftware game published by ND Games) and wanted to install it on my modern rig. The installation went fine, but it’s asking for a serial number/activation key to play.

The neon hum of Neo-Kyoto was a constant vibration in Jax’s teeth, but the silence inside his tech-den was louder. On his workbench sat the "Ninja Blade," a custom-built PC that looked less like a computer and more like a folded steel katana. It was a masterpiece of liquid cooling and obsidian glass, but it was currently a dead weight.

. Note that prices for these keys have risen significantly due to the game's rarity. Activation Steps for Steam