PentaBall

PentaBall: A Hard-Surface Rolling Sport on the 41-Cell Cross Grid PentaBall is a two-player, turn-based rolling sport played on any hard, flat surface. Players roll a ball from a launch line toward a 41-cell cross-shaped grid; wherever the ball comes to rest claims that cell for the roller. The goal is to form more scoring patterns — three-in-a-row "triples" plus an optional family of "Smart" bonuses (Long Tic-Tac-Toe, Bonus Diagonals, Center Circles, and the TTF Sub-Grid Cross) — than the opponent by the time the board fills. This technical report specifies the game in full: board geometry, equipment and court dimensions (surface, grid, ball, slider/launch lines, and spot sizes), rules of play, team formats, and the complete scoring system, with diagrams for each Smart-mode bonus. PentaBall uniquely unites three skill domains rarely combined in one activity: fine-motor ball control (a controlled roll, as in bowls, boccia, or curling), spatial-tactical planning (an open, never-drawn scoring tic-tac-toe), and offense/defense decision-making under turn pressure. The same game scales without modification from a tabletop clinic board, to a compact single-slider court that fits a classroom or hallway, to a field-scale version on a soccer pitch with a tennis-court-sized board for spectator and championship play. Requiring only a flat surface, a ball, and a taped or printed grid, PentaBall is well suited to schools, colleges, gyms (as a 60-minute class), community centers, and adaptive/Para programs, and is designed — like pickleball — to grow from the community up. The report includes a structured proposal for educational, recreational, inclusive, and competitive adoption. PentaBall originated as a digital game in the LE Games app and is a companion to the Cross-Grid book series.