"Tag" is a hostage rescue map in which the hostages spawn inside rescue zones. This means that they must only be "tagged out" by a CT.
Siegelab also features a "pseudo-siege" mode in which all entrances to the main building are one-way. Ts spawn inside the building with the hostages and cannot leave. CTs must get in and tag out the hostages. They are also stuck inside upon entering. CTs spawn on both sides of the building.