there is nothing wrong with the query, he shows nothing as result... what is wrong?
runquery() just runs the query, there's nothing wrong with that
i guess with the mysql_fetch_row?
$string = "SELECT game.title, game.website AS game_website, platform.platform, genre.genre, maker.maker, maker.website AS maker_website, uitgever.uitgever, uitgever.website AS uitgever_website FROM game,platform,genre,maker,uitgever WHERE id_game = '$id_game' AND game.id_platform = platform.id_platform AND game.id_genre = genre.id_genre AND game.id_maker = maker.id_maker AND game.id_uitgever = uitgever.id_uitgever";
$result = runquery($string);
$regel = mysql_fetch_row($result);
echo $regel->title;