I saw this spears on trello,
Ooops wrong picture, sorry… =P
i read about some bows upgrades, why not some Spears upgrades like this?
it is Atlatl, you can Throw the spears more fast.
with this tool you may throw their spears, without it will not be possible and will only be used as a melee weapon.
and the possibility change the spearhead, made of wood, scrap metal or rock, its will change the damage.
that is it
sorry my English.