On Horizon Zero Dawn and the Frozen Wilds expansion I designed the entire global game economy. This included the full player progression arc start to finish, including the entire loot tree for all enemies, robots and world exploration.
I was responsible for the design of all merchant shops, player inventory crafting and the trading system. I was also charged with the full suite of inventory items spanning the ~70+ hour campaign. Core implementation consisted of extensive nodegraph work in the Decima engine as well as level design and some of the supporting UI assets.
Pictured: Trading with a merchant for a Golden Fast Travel Pack. Note: Trading with merchants requires items beyond raw currency - In this case, the player must hunt Foxes and other wildlife for skins and meat to afford this trade.