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 GZipped (TESV)
    worldinfo1      -- Layer Data GZipped (TEMD)
    worldinfo2      -- Copy of blocks.csv GZipped    -- will use this from the next load
    worldinfo3      -- Copy of items.csv GZipped     -- will use this from the next load
    worldinfo4      -- Copy of materials.csv GZipped -- will use this from the next load
    (any random number in Hex ACTORID_MIN..FFFFFFFF)    -- Serialised Entity Information (including Player)
    (PLAYER_REF_ID in Hex -- 91A7E2)    -- Player Character Information (Serialised Entity Information)
    (51621D)        -- The Debug Player (Serialised Entity Information)
    load_order.txt  -- LoadOrder.csv



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