If you like submarins, this is a nice game to learn all about them.
The drawback is TIME. Everything goes so slowly and, you are so blind that the game can be really frustrating.
Maybe a good simulation but, a game needs something else to be attractive to the player.
Buy if you like submarins and the price is a bargain

It is fun but do not expect high end graphics, This game does not utilize the high end graphics displays of todays systems. Do no expect full screeen displays or incredible displays.

I don't know how I got this. I hope I didn't pay for it. I guess if you have nostalgia for it go right ahead but it's as intuitive as a 16 year old game and the graphics are fit for 1997.

Steam overlay doesn't work which means you can't take screenshots or use any community features.

Do not buy, doest work in newer systems

At first I really wasnt sure if this was going to be a big waste of time and money but to my surprise
it can deliver a really entertaining time killer.

THE GOOD

1: very realistic .. well at least to a civilian.
2: complex game mechaincs to those of us who dont like our games dumbed down.
3: strong sense of acomplishment when missions are completed
4: good variety of operations consisting of single missions, campaign and training.
5: A good challenge but far from impossible once youve learned your submarine skills.
6: Lots of replay value.
7: non linear game play do it your own style quiet or loud just be aware of critical objectives you are rewarded or punished based off your operating decisions.

THE BAD

1: No real training or explaining on how to actually operate ANYTHING ON YOUR SUB!
making life very difficult in the beginning. BTW I hope you learned how to use sonar and stealth tactics for a submarine in high school otherwise its very touch and go for the first 5 hours.
2: A hard sell for full price 20 dollars based off its a 1997 game best to find it on sale.
FINAL

I give this game a 7.0

A great simulator , if you can take the time experiment and read all the manuals and figuar out how a nuclear sub actually works you will find this game has a surprisingly high fun factor even for a 1997 game.