Prerequisite: Type 1-30
The TARDIS Dimensional Stabilizer and related Architectural Configuration Circuitry is faulty or is one of the earliest examples of Transcendent Dimension Technology, the practical upshot of which is that the interior is of a finite size, and in some cases, may not be much bigger than the exterior, if at all.
As a Major Trait, the TARDIS only has a single console room, one example of each room mentioned in the TARDIS Rooms Section (see pg.104 of The Time Traveller's Companion) and D6 spare rooms that are typically used as crew quarters or stowage.
This Trait raises the TARDIS’ Story Points by 2.