See also the List of all ice and the Ice category.

The Corporation installs ice in front of his/her servers to protect them from the Runner. In order to access a server, the Runner must first deal with that ice during a run on that server.

Ice is always installed in the outermost position in front of a server. Installing a piece of ice costs 1Credit for each other piece of ice already protecting that server.

Ice has special required conditional abilities called subroutines. If the Runner does not break the subroutine(s) on a piece of ice that s/he encounters, then the effects of those subroutines resolve.

There are four main subtypes of ice: Barrier, Code Gate, Sentry, and Trap.

Page 9, Column 1, Paragraph(s) 1-3, Core Rule Book

Ice defends the Corporation's servers against intrusions by the Runner.

The Corporation installs ice in front of any server. Ice is not active until it is rezzed by paying credits equal to its rez cost.

A piece of ice has one or more subroutines (Subroutine) in its text box that the Runner must break during a run or suffer their effects if the ice is rezzed.

Page 13, Column 2, Paragraph(s) 4-5, Core Rule Book
Ice can be installed in front of any server in order to protect that server. After a piece of ice is installed in front of a server, it is dedicated to that server and cannot be moved or rearranged.

When the Corporation installs a piece of ice, he must install it in the outermost position of the server and pay an install cost equal to the number of pieces of ice already protecting that server. The outermost position is the position farthest from the server, in front of any other pieces of ice that are protecting the server.

Page 16, Column 1, Paragraph(s) 3, Core Rule Book
Ice is defensive software the Corporation installs in front of his servers to protect his valuable data. There are four main subtypes that can appear on a piece of ice: sentry, barrier, code gate, and trap. Ice also has separate abilities called subroutines.
Page 17, Column 2, Paragraph(s) 3, Core Rule Book
Note: The Corporation can only rez ice when it is approached.
Page 18, Column 1, Paragraph(s) 3, Core Rule Book
Note: Breaking all subroutines on a piece of ice does not mean the ice is trashed. A passed ice remains installed and is approached during every subsequent run against the server it protects.
Page 31, Column 1, Paragraph(s) 4, Core Rule Book
Ice: A Corporation card type which protects his servers from the Runner.


  • Ice stands for "intrusion countermeasures electronics", a term popularized by William Gibson.

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