As per title, just wondering what games have actual treasure maps you have to navigate with to obtain cool shit.
I think Morrowind had em as well as New Vegas?
I haven't played many of those games.
It could also just be text as well. Dragon Age: Origins had some treasure notes you could read for extra stuff.

Sid Meier's Pirates

Sid Meier's Pirates!

Edit: Dang! ninja'd by the fraction of a second. :)

Skyrim

There are treasure maps in the Port Royale series.

Monkey Island games feature treasure maps as part of the story, although they may not be what you'd expect!

For a non-pirate themed game, I remember reading Kingdom Come: Deliverance has treasure maps as well.

that game is so boring

Elder Scrolls Online, Heroes of MM 3 probably the others too

Thronebreaker has some treasure maps. :)

Miasmata

Kind of a treasure map. You'll have to use it to navigate on the Island for progression) and the game itsself is cool, too!

Assassins creed black sail and rogue. Pirate games in the AC universe had treasure maps.

From the top of my head:

Gothic 1, 2 and 3
Pillars of Eternity and Pillars of Eternity II
and Legend of Grimrock 2

Legend of Grimrock 2 being a bit of a standout because it gives you a shovel and you could just literally dig up the entire place (except for "undiggable" ground of course) without following the clues provided by the maps at all.

HOMM3 and Minecraft.

Salt:

https://projectsalt.fandom.com/wiki/Map

IIRC Venetica has some. And with the latest content patch Stardew Valley has them too.

Two Worlds II

Why's just 3 mentioned so far? All HoMM games have them.
Also the Sea Dogs series...
Think there's something in King's Bounty games as well?