you have to raise a billy but if his hunger reaches 0 he dies so make sure to feed him from time to time bully billy attacks from time to time so you need to buy sad billy to protect billy from bully billy then you will break down the planks from the cave and then you will have the last 2 items to buy there update 1.1 added cave jimmy and sledge hammer update 1.2 added gems and a strong picaxe you need the picaxe to break the gems gems will grow back after 30 seconds once mined currently do nothing atm update 1.25 billy no longer walks ontop of the buy buttons update 1.3 bully billy now attacks later update 1.4 billy now has a bed and can now sleep and there is now a gem crusher which when used will convert 1 gem into 100 gummy dollars and if u have 10 gems you can buy the blue locker and billy will thank you update 1.5 added a-45 he will automatically mine gems when it is done growing cc-45 will earn 1000 gummy dollars every 15 seconds and then golden billy which is just a waste of money but its cool because its gold update 1.6 fixed a-45 mining gems when he is not purchased added c-25 and the vault you need to find the key to the vault