public function getPreviousGame($entry = null)
    {
        $currentGame = $this->getNextPlayableGame($entry);
        $previousMissionGame = null;

        foreach ($this->missionGames as $missionGame) {
            if ($missionGame->getGame()->getId() === $currentGame->getId()) {
                return $previousMissionGame;
            }

            $previousMissionGame = $missionGame->getGame();
        }

        return null;
    }