There is only one file type that uses the .WOTREPLAY extension:
World of Tanks Replay File
Game file created by World of Tanks (WoT), a multiplayer tank battling game; saves a multiplayer battle replay that can be played back at a later time; saved to the \World of Tanks\Replays\ installation directory if replay recording is enabled in the game options.
WOTREPLAY files do not store actual video data. Instead, they store locations, movements, and actions by each of the players, therefore allowing the replay to be re-simulated in the software.
Updated: December 23, 2012