New GUI here

Simple autoclicker script, needs xdotool installed

Download here

# For default settings (12x12) use: 
sh farmville_click.sh

# Or custom mode: 
sh farmville_click.sh num_rows num_columns click_interval_time wait_interval_before_pointing

# If give this error(Syntax error: Bad for loop variable), use bash
bash farmville_click.sh

Download old script here (bash script for *nix based)