Development logs and recruitment posts on the Roblox DevForum highlight the simulator's reliance on custom UI designers to create a seamless loop between "throwing" actions and "selling" those actions for upgrades like ranks and faster throwing speeds. : The GUI must facilitate a loop: Throwing →right arrow Gaining "Throws" →right arrow Selling for Coins →right arrow Buying Upgrades (GUI-based storefront) →right arrow Advancing to New Islands .
: A hierarchical GUI that displays stats for Common, Uncommon, Rare, Epic, and Legendary perks. This interface tracks multi-rank upgrades for attributes like Blade Range, Throw Speed, and Soul multipliers. Blade Throwing Simulator GUI
: Later iterations of the interface added dedicated sections for "Auras" and "Ancient Islands," expanding the GUI footprint to include rare pet management. Development logs and recruitment posts on the Roblox