public static function getGameWithoutMarks($only_past = true) {
    $game_storage = \Drupal::entityTypeManager()->getStorage('game');
    $query = \Drupal::entityQuery('game');

    if ($only_past) {
      $now = new \DateTime(null, new \DateTimeZone("UTC"));
      $query->condition('game_date', $now->format('Y-m-d\TH:i:s'), '<');
    }

    $group = $query->orConditionGroup()
      ->condition('score_team_1', null, 'is')
      ->condition('score_team_2', null, 'is');
    $query->sort('game_date', 'ASC');
    $ids = $query->condition($group)->execute();

    $games = $game_storage->loadMultiple($ids);

    return $games;
  }