A savegame consists of a Playable Character Information, Savegame Metadata, and other files.
A savegame is a single file in the format of TerranVirtualDisk.

Files contained the TerranVirtualDisk is as follows:

(root)
    worldinfo0      -- Savegame Metadata (TESV)
                       Has fixed Entry ID of 32767
    worldinfo1      -- Copy of blocks.csv     -- will use this from the next load
    worldinfo2      -- Copy of items.csv      -- will use this from the next load
    worldinfo3      -- Copy of materials.csv  -- will use this from the next load
    world[n]        -- Layer Data (TEMD); [n] is a serial number of the world (starts at 1)
                       Has fixed Entry ID of [n]
    (any random number in Hex 32768..ACTORID_MIN - 1)   -- Serialised Dynamic Item?
    (any random number in Hex ACTORID_MIN..FFFFFFFF)    -- Serialised Entity Information (including Player)
    (PLAYER_REF_ID in Hex -- 91A7E2)    -- Player Character Information (Serialised--JSON'd--Entity Information)
    (51621D)        -- The Debug Player (Serialised Entity Information)
    load_order.txt  -- LoadOrder.csv (NOT zipped)



Remarks: world history is created at the load time by scanning all the actors' corresponding ActorValue