Which graph should I use for this ?

In order to teach a game to kids, I would like to make a chart. Since english is not my mother language, I'm just asking for the proper name of the template I should use to display my data.

It's a construction game, with tons of raw materials, you collect it at a cost. i.e. : wood, stone, metals, etc.

You can use this raw material to make other precious materials, such as boards, tools, houses, roads... and so forth, those materials can also be combined to make others stuffs. Production costs should be aggregated. it's the main point of the visualization.

What is the type of graph I can use in order to represent the multiple combinaisons between materials ? I should look like a tree I guess. But not quite the same. It seems like a rather simple question, but I cannot figure out which kind of template I should look for.

Thanks for any help !