From the box:

"Uncle Jimmy, let's play some baseball."
"OK Jack, batter up!"
Baseball fans everywhere understand a solo homer, a two run dinger and a grand slam. However, during the early days of baseball, a three run homer was called a JIMMYjack.
JIMMYjack BASEBALL
Paying tribute to a special relationship and the always exciting three run homer.

Each JIMMYjack game box includes two decks of game cards, one game board, one scoring pad, two dice, 18 baseball tokens and one JIMMYjack Baseball ground rules and instruction manual.

Ages 8 and Up.