$query = new EntityFieldQuery();
$query->entityCondition('entity_type', 'commerce_product')
      ->propertyCondition('status', 1)
      ->propertyCondition('type', 'games')
      ->fieldCondition('field_platform', 'tid', 76) // 76 is the ID for PlayStation 3
      ->fieldOrderBy('commerce_price', 'amount', 'ASC');
$result = $query->execute();

------

Returns:

array(0) {
}