Currently, only Cold Waters.
is it really like 688 ? janes fleet ?
Well to be honest with you the short answer to your question is (and oddly so) both yes and no.
The long answer is that in fact this game (Cold Waters) is based on a 1988 game called "Red Storm Rising" developed by MicroProse back then whose storyline is based on the Tom Clancy's novel of the same name (Red Storm Rising):
When comparing Cold Waters to Jane's 688i, I would say:
- While Cold Waters is no "arcade game", it is a "light sim" much more simplified than 688i, since for example you don't have the different and dedicated stations views. For example no TMA station or Radar/ESM station, etc...
What you have in terms of views (in Cold Waters) is the periscope view (when extended) and the Tactical Map where you can see and select the currently detected contacts and then you have 4 tabs in which one of them can be used to expand a simplified ID page where after selecting your contact you can ID it in terms of frequency by comparing the contact's frequency with the frequencies stored on the subs Database - Here it is very similar to 688i albeit much more simplified, for example you don't select stuff like turns per knot and you cannot listen the noise level to bearing or resuming, you can only listen in the frequency band.
The other 3 tabs that you can expand allows you to track your current weapons stored on the sub and load weapons into the torpedo tubes, track the damage of the sub (you can even assign which part/section of the sub will be the priority for the repair parties) but again nothing as "fancy" as in 688i.
- So as you can see, Cold Waters is simplified compared to 688i although and again it is not an arcade game - Again I would classify it as a "light sim", which for the lack of time that I'm currently having is actually a good thing IMO (easy to learn and master, IMO).
Also IMO, one of the best features of Cold Waters is that you have 3 campaigns, ranging from the 1960's, to 1984 and 2000. I would say that in terms of tech and tactics the 1984 and 2000 campaigns are quite close to what we are used to in 688i.
The 1960's campaign seems very interesting (I haven't played it yet, but I played a few single mission of this era) since it seems to be a quite change in terms of tech and tactics compared to the 1984 and 2000 campaigns. For example in the 1960's missions or campaign your main weapon against surface ships are unguided torpedos (WWII style) and there's no missiles such as the Harpoon Anti-Ship missile. There are (wire) guided torpedos in the 1960's era but they are rather slow and short ranged and have a relatively weak warhead - basically their usefulness seems to be intended for use against enemy submarines (and even here there are very limited against the fastest ones) and as such their effectiveness is very limited against ships.
If there's something more specific that you would like to know about Cold Waters, please feel free to ask.