Counter-Strike: Condition Zero
A separate Counter-Strike title that includes single-player play with bots. Compare its own product description when you want structured offline play beyond a themed CS 1.6 package.

What distinguishes this edition
Condition Zero is a distinct game, not merely the name of a bot add-on for CS 1.6. Use its publisher page for availability and requirements, and distinguish its bot-based single-player experience from the separate Deleted Scenes campaign.
Download source
Open publisher websiteChoose structured solo play deliberately
Condition Zero is useful to compare when you want a separate Counter-Strike product with single-player play against bots. Check which part of the product you are launching and follow its own installation route. Adding a bot plugin to CS 1.6 does not turn that client into a Condition Zero installation.
Questions before you play
Can the CS 1.6 installer install Condition Zero too?
Do not assume that. Condition Zero is a separate product; use its stated official installation route and check what is included in the product you own.
Related pages
Condition Zero: Deleted Scenes
A scripted single-player campaign associated with Condition Zero. Choose this entry when your interest is mission-based play, rather than ordinary matches populated by a bot system.
Counter-Strike: Source
The separate Counter-Strike game built on the Source engine. Explore this route when you want that title itself, rather than a Source-themed appearance in CS 1.6.
CS:GO Legacy
An archival route for investigating the earlier Counter-Strike: Global Offensive experience. Confirm current access conditions before planning an installation or expecting familiar online services to remain available.