It is both a mystery game and an enjoyable fishing game with many options and a nightly horror twist (tied to the mystery). You can find treasure and resources that can be traded in cities or outposts at selected stores and shipyards to upgrade and research new technology, while the main story runs in parallel. You can play as long as you want, check your nets for crabs, scout and mark your map with fishing locations, study the onboard encyclopedia and repair your equipment all while discovering bits of the main plot as you go. I also got The Iron Rig DLC which adds a lot of new functionality, upgrades and trading options. I highly recommend both.
This is an amazing game but not for the casual player. Don't expect to see enemies approaching in the 3D view screen -this is just a generic representation of your surroundings. Instead you may detect enemies if you have the right abilities and read about it in the actions pane. Encounters will be represented as animated cards and battles planned strategically before the combat is executed in a text based fashion. The game presumes that you like to read text. You can play the game keyboard-only or use the mouse. TIP: Start by unequipping all items from the default A-team and use the items to equip your own team of choice. This will save gold and give you a head start. There is a complete in-game manual and a vast catalogue with all creatures in the game (including your stats from all your encounters). This is a Might and Magic type of game where you go exploring with a party of heroes and choose your battles, gain XP, sell and equip loot etc. and the game is from the same era (1985) as the first Might and Magic (1986). This remake adds polish and finesse to the original games and is highly recommended if you like to do your own thinking and not just point and click.