RewriteEngine on 
RewriteRule ^game/([0-9]+)/([_A-Za-z0-9-]+).html /file.php?f=$1 [L] 
RewriteRule ^category/([0-9]+)/([_A-Za-z0-9-]+)/?$ /browse.php?c=$1 [L] 
RewriteRule ^category/([0-9]+)/([_A-Za-z0-9-]+)/([0-9]+).html /browse.php?c=$1&page=$3 [L] 
RewriteRule ^profile/([0-9]+)/([_A-Za-z0-9-]+).html /profile.php?u=$1 [L] 
RewriteRule ^page/([0-9]+).html /page.php?p=$1 [L]