Technology
Pretty much if it didn't exist during the Medieval period between 600 and 1500, it doesn't exist in game either. If you have any questions please don't hesitate to ask.
Below are some examples.
Glass of varying qualities, from leaded glass to colored glass, crafted lenses fashioned into telescopes or "far eyes."
Mirrors crafted from beaten silver
Maps of the stars and planets
Clothing is made of fabrics such as cotton, linen, wool and silk. Elaborate dresses with lace and fine gemstone ornaments are common for noble ladies
Dyes of many colors, metal can even be colored
Two masted galleys equipped with up to 60 oars and four decked warships of 400 oars.
Iron braziers to burn coal.
Oil lanterns exist and are used frequently.
Chains forged from bronze, copper, lead, iron, steel, tin, brass, platinum and gold
Siege weapons including catapults, trebuchets, mangonels, spit fires and scorpions. Some are mounted on warships and some are too massive to ever move.
Fine plate armor which is often crafted into fantastic helms and heraldic devices.
Longbows and heavy crossbows are both common
Riders may use spurs and stirrups for their mounts both of which are crucial for knights. Similarly it is assumed knights use arched saddles allowing them to wield lances underarm and charge at full gallop
The wildlings of the North and the clansmen of the Mountains of the Moon have little technology most of their tools are scavenged or crudely built.
The realms to the east may have wondrous devices and strange advances though barbaric tribes like the Dothraki have little use for scholarly pursuits.
Ravens are trained to carry message and are used to communicate across the breadth of Westeros.
Below are some examples.
Glass of varying qualities, from leaded glass to colored glass, crafted lenses fashioned into telescopes or "far eyes."
Mirrors crafted from beaten silver
Maps of the stars and planets
Clothing is made of fabrics such as cotton, linen, wool and silk. Elaborate dresses with lace and fine gemstone ornaments are common for noble ladies
Dyes of many colors, metal can even be colored
Two masted galleys equipped with up to 60 oars and four decked warships of 400 oars.
Iron braziers to burn coal.
Oil lanterns exist and are used frequently.
Chains forged from bronze, copper, lead, iron, steel, tin, brass, platinum and gold
Siege weapons including catapults, trebuchets, mangonels, spit fires and scorpions. Some are mounted on warships and some are too massive to ever move.
Fine plate armor which is often crafted into fantastic helms and heraldic devices.
Longbows and heavy crossbows are both common
Riders may use spurs and stirrups for their mounts both of which are crucial for knights. Similarly it is assumed knights use arched saddles allowing them to wield lances underarm and charge at full gallop
The wildlings of the North and the clansmen of the Mountains of the Moon have little technology most of their tools are scavenged or crudely built.
The realms to the east may have wondrous devices and strange advances though barbaric tribes like the Dothraki have little use for scholarly pursuits.
Ravens are trained to carry message and are used to communicate across the breadth of Westeros.