How to create text with letters

I found a string like below:

Is there any idea about how them made with? I dont think they are made with hand.

Thanks in advance!

      ___     
     /  /\    
    /  /::\   
   /  /:/\:\  
  /  /::\ \:\ 
 /__/:/\:\ \:\
 \  \:\ \:\_\/
  \  \:\ \:\  
   \  \:\_\/  
    \  \:\    
     \__\/    
      ___     
     /  /\    
    /  /::\   
   /__/:/\:\  
  _\_ \:\ \:\ 
 /__/\ \:\ \:\
 \  \:\ \:\_\/
  \  \:\_\:\  
   \  \:\/:/  
    \  \::/   
     \__\/