[Solved]

I can't remember the name of a game on gog.

I remember it was a turn-based tactical rpg, set in an aquatic universe (perhaps with submarines or ships).

please help me, thank you in advance.

#1
https://drive.google.com/file/d/1aTvp_K-TBFmvFWVwsPQAbRgacz59VSP6/view

#2
https://drive.google.com/file/d/1BsFCSBQimplUPtOhG5HUqMg4sIX9fAN-/view

Main Link (if the two last don't work for some reason)

https://drive.google.com/drive/folders/1qN91wXmc1XmfcuruKSAIy_oQ6s3IsHcR?usp=sharing

Depth of Extinction?

Yes that the one, thanks for your help. :)