Did you know OPTF2 supports all Steam games?
Items with series number attached
Chemistry Set
Level 5 Recipe
This item has a set of inputs that, once fulfilled, will
reward you with what's listed in its outputs.
Chemistry Set
Level 5 Recipe
This item has a set of inputs that, once fulfilled, will
reward you with what's listed in its outputs.
Chemistry Set
Level 3 Recipe
This item has a set of inputs that, once fulfilled, will
reward you with what's listed in its outputs.