Valve Anti-Spam Measure Will Kill Physical Distribution

[SteelCrysis]

Actually, it will kill any disc sales of any games on disc that require Steam activation.
https://support.steampowered.com/kb_arti...IAGK-7663#

You will need to spend at least $5.00 USD within the Steam store.

Some examples of purchases that grant access to these features are:

• Adding the equivalent of $5 USD or more to your Steam Wallet
  
• Purchasing game(s) that are equal to $5 USD or more from the Steam store
  
• Adding a Steam Wallet card to your Steam account
  
• Purchasing a Steam gift that is equal to $5 USD or more from the Steam store (Receiving a Steam gift from a friend doesn't count)
  

The below actions will not remove limited user restrictions:

• Activating a retail game on Steam
  
• Playing free demos
  
• Adding a non-Steam game as a shortcut
  
• Adding/playing promotional trials like Free Weekends
  
• Free to Play games (Examples: Alien Swarm, free versions of Portal and Team Fortress 2)
  
• Activating promotional CD Keys from hardware or graphic card manufacturers