This edited version of Counter-Strike's "Canyon Siege" map ("cs_Siege.bsp") fixes a problem with the hostage rescue zone when playing with AI bots in the game in Counter-Strike: Condition Zero.

Many times a counter-terrorist AI bot will lead the hostages to the rescue zone (located at the entrance of the tunnel), and stand directly in the middle of the rescue zone (blocking the hostages path to the rescue zone). The hostages will not walk into the rescue zone (saying things such as "We're so close!"), resulting in the round finally ending in a win for the terrorists (if there are any terrorits alive when the round ends).

Optionally, a second edited version of the map is also included that removes the DSP sound EAX reverb effects from the map (along with the hostage rescue zone fix mentioned above). Note that this version works for both Counter-Strike, as well as Counter-Strike: Condition Zero.

The following model-based map entity has been changed from:

{
"model" "*76"
"classname" "func_hostage_rescue"
}

...to the point-based map entity:

{
"origin" "978 704 1"
"classname" "info_hostage_rescue"
}

...in both versions of the map that fixes the hostage rescue zone problem.

Lastly, the following map entities have also been removed:

"classname" "env_sound"

...which were configured for the following reverb effects room types:

"roomtype" "0" = Off (Disable All Filters)
"roomtype" "3" = Metal Medium
"roomtype" "17" = Concrete Small
"roomtype" "18" = Concrete Medium
"roomtype" "19" = Concrete Large
"roomtype" "22" = Big 3
"roomtype" "24" = Cavern Medium

...in the version of the map that removes the DSP sound EAX reverb effects from the map (along with the hostage rescue zone fix mentioned above).

It would never switch back to room_type 0 on the next map.