688i attack sub
 

I used to use this many many times, always enjoyed it and finished whole sim several times, sometimes its not damn easy at all. Anyway, does anybody know if it can be played on Win 10, as it went pear shaped and refused to run when 8 came out.

This is the place in the forum where this game is talked about more. I suggest you search for answers there:

http://www.subsim.com/radioroom/forumdisplay.php?f=193

[EDIT] Or which publisher released your game? From what year was this?

https://en.wikipedia.org/wiki/688_Attack_Sub

This game is unlikely to run in Windows anything after Win98(SE)

Forget year long time, but it worked long after win 98, much longer. :ping: