Each drone has a count down where it will randomly pick an available order, upgrading Auto decreases the delay. If you let it sit you will see the drone fly off and do an order on its own.
So, the idle game is the game which gameplay consists of the player performing simple actions such as clicking on the screen repeatedly to earn some in-game currency. And here you can hold your mouse button to get more currency and to play with little creature.
 "IDLE: Gravity Breakout"){kind=icon}
 "Zero IDLE"){kind=icon}
 "Synergism"){kind=icon}
 "Dungeon's of R'lyeh"){kind=icon}
 "Idle Grindia: Dungeon Quest"){kind=icon}
 "Idle Drone Delivery"){kind=icon}
 "IF2"){kind=icon}
 "Freemium Idle"){kind=icon}
 "Sweety"){kind=icon}
 "Idle Magic Wall"){kind=icon}
 "Idle Lich King"){kind=icon}
Each drone has a count down where it will randomly pick an available order, upgrading Auto decreases the delay. If you let it sit you will see the drone fly off and do an order on its own.