You can have the autoclicker feature using AppleScript editor found in the Utilities menu.
Open the application and use this sample code and customize it for your own needs:
repeat 1 times
delay 2 // modify the delay for each action
tell application "System Events"
tell application process "YOURGAME" //add the name of the application or browser
delay 2
click (click at {300, 300}) // the coordinates of the autoclick location, just add yours
If you want additional actions, simply add a delay string and then a click string. Copy and paste the code without my comments "// comment"