hello 501xx are you the same 501 from
http://s501xx.s28.xrea.com:8080/ ??
sorry to see your page is down.
edit: it's back up again
oops
as for this game it's pretty cool from memory- i played it briefly expecting the usual anime based rubbish, but was pleasantly surprised to find a quite playable shooter. similar to gamera2000 or panzer on the ss