Town ball, townball, or Philadelphia town ball, is a bat-and-ball, safe haven game played in North America in the 18th and 19th centuries, which was similar to rounders and was a precursor to modern baseball. In some areas—such as Philadelphia and along the Ohio River and Mississippi River—the local game was called Town Ball. In other regions the local game was named "base", "round ball", "base ball", or just "ball"; after the development of the "New York game" in the 1840s it was sometimes distinguished as the "New England game" or "Massachusetts baseball". The players might be schoolboys in a pasture with improvised balls and bats, or young men in organized clubs. As baseball became dominant, town ball became a casual term to describe old fashioned or rural games similar to baseball.
The rules of town ball varied, but distinguishing characteristics most often cited were:
Generally the infield was a square or rectangular shape, with four bases or pegs. Similarly to baseball, the fourth base was called home base, as it was the final goal of a runner. However, differently from baseball—and more like rounders—the striker would stand between first and fourth base, at a kind of fifth base called the striker's stand. The thrower stood in the middle of the square and delivered the ball to be hit by the striker. If the struck ball were caught in mid-air or on the first bounce, the striker was called out. If no one caught it, the striker became a runner and advanced as many bases as possible, with the option to stop at any base as a safe haven.
In most varieties of the game, fielders could hit the runner with the ball and if he were not on a base he would be called out. But in some, the cross-out was used: the fielder threw the ball so as to cross the runner's path, between him and the next base. A runner who reached fourth base safely was said to have achieved a round or tally.
The concept of innings was used: the team with the bat was "in", until put "out" by the opposing side. If one-out, all-out was the rule, the defensive team only needed to retire one man to end the inning. However, the game might also be played as all-out, all-out, meaning that every player had to be retired (as in cricket) before sides were changed. Matches might be played for an agreed-upon number of innings, or until one side had achieved a requisite number of tallies.