Siam Sea

Lore & Background

The Siam Sea is steeped in the lore of Marco Polo's 13th-century voyage, during which his fleet was reportedly lost in a storm while returning from China. According to the game's narrative, Polo's ships carried the Cintamani Stone—a powerful artifact from the hidden kingdom of Shambhala—and the wreckage of his vessels now lies scattered across the seafloor. Centuries later, treasure hunters like Nathan Drake and his rival Zoran Lazarević navigate these waters in pursuit of the stone's secrets, uncovering remnants of Polo's expedition and the ancient civilization that once thrived inland.

The sea itself is depicted as a volatile environment, with jagged rock formations, hidden coves, and the ruins of colonial-era fortifications dotting its islands. The water is often murky and treacherous, hiding shipwrecks and underwater caves that hold clues to Shambhala's location. The Siam Sea serves as a natural barrier that isolates the island from the modern world, preserving its mysteries for centuries until Drake's arrival.

Environmental storytelling within the game reveals that the Siam Sea was once a bustling trade route, but its waters turned deadly after the fall of Shambhala. The game's narrative suggests that the sea's dangerous currents and hidden reefs were deliberately created or amplified by the guardians of Shambhala to protect the kingdom from outsiders, making it a graveyard for ships and a test for those who dare to seek the truth. Locals whisper of a 'hungry tide' that pulls vessels onto reefs as if the sea itself has a grudge, and old fishermen's charts mark entire stretches as 'cursed waters'—a warning that few heeded and fewer survived.

In Their Own Story

The salt spray stung Nate's eyes as he clung to the rusted railing of the fishing boat, the Siam Sea stretching out before him like a bruised mirror. The map in his hand was soaked through, the ink bleeding into illegible shapes, but he knew the coordinates by heart. Somewhere beneath these waves lay Marco Polo's lost fleet—and with it, the key to Shambhala. The engine sputtered, and the boat lurched as a wave crashed over the bow. 'You sure about this, Nate?' Elena's voice crackled over the radio. He grinned, tasting copper and salt. 'When have I ever been sure?' The sea didn't answer, but the wreckage of a 700-year-old ship groaned beneath them, as if waking from a long sleep.

Reader's Guide

The Siam Sea is the primary setting for the early chapters of Uncharted 2: Among Thieves, specifically the 'Borneo' and 'The Dig' segments. Its real-world inspiration draws from the Andaman Sea and the waters around the Malay Archipelago, with dense jungle islands, limestone karsts, and hidden lagoons. In the campaign, players navigate the sea via boat and on foot across small islands, facing treacherous climbs, crumbling ruins, and ambushes from Lazarević's mercenaries. Keep an eye on the waterline during boat sections—submerged wreckage can snag your hull, and sudden squalls reduce visibility to near zero. For collectibles, the seafloor holds several treasures tied to Polo's fleet, but you'll need to dive at specific points marked by floating debris or unusual rock formations. The 'Sinking Ship' area, in particular, rewards careful exploration of its tilted decks and flooded compartments.

Did You Know?

• The Siam Sea is named after the historical kingdom of Siam (modern-day Thailand), though the game's location is a fictional composite of several Southeast Asian regions.
• In Uncharted 2, the sea's underwater sections were a technical milestone for the series, introducing dynamic water physics and light refraction effects.
• The wreckage of Marco Polo's fleet in the Siam Sea includes a galleon that is historically anachronistic, as Polo's ships were likely junks, not European-style galleons, but the game takes creative liberty for visual imp
• The Siam Sea's treacherous currents are referenced in the game's dialogue as a natural defense for Shambhala, echoing real-world myths of guardian spirits protecting sacred sites.