For me it was a Buckaroo.
I was lucky enough to grow up in the 60's, down the Jersey shore, just walking distance from Barnacle Bills Amusements and the Seaside Boardwalk. Bills had a Buckaroo we played the heck out of, loved it and was one of the 1st machines in my collection and still have it. Once you have one you have to add a Cowpoke too and so many more....