You called it boxball. Or four square. Depending on where you grew up, maybe something else. A chalk square on the blacktop — split into four equal quadrants — a playground ball, and a line wrapping around the court at lunch, at recess, or at the family cookout. Gridball is what happens when that game grows up.
Gridball builds on boxball's foundation. The rotational mechanic — play your way up from the bottom corner to the top — is the same. The elimination mechanic — miss a return, hit it out of bounds, foul out — is the same. The co-ed spirit is the same. The ball is the same.
What's different is that Gridball is team-based. Two teammates per team on the grid at any given moment, each occupying their own quadrant — four players total on the court. Rosters are co-ed by rule: seven male-identifying and seven female-identifying players per team, for a full squad of 14. The grid itself is bigger than the boxball you remember: a full 24×24 foot square instead of the 10- or 12-foot version you chalked up at recess. The stakes scale accordingly. And on top of the classic one-point elimination, we've added two new scoring mechanics that reward holding your ground: Grid Hold (3 pts) and Gridlock (7 pts).
The full ruleset — serve rules, the Z-rotation, elimination conditions, fouls and their escalating penalties — is on our Rules page, with the complete 92-page Official Rulebook V2.1.4 available to download.
No special equipment required.
Under different names — four square, champs, king's ball, king's corner — this game has been played in schoolyards across the world for generations. Different blocks, different continents, different house rules at every chalk square. What's stayed remarkably consistent is the shape of the game itself: four quadrants, a rotation, one bounce, one elimination. What's changed less often is someone deciding to write it down.
The seed of Gridball got its first serious look in a very specific place. If you went to New World School of the Arts — the performing-arts high school sharing a building with MDC Wolfson Campus in Downtown Miami — you know where. Nine stories of academic and studio space. No traditional gym. On the seventh floor, the dance studio and the weight room sat right next to each other — door to door. The weight room was mostly where the guys went. P.E. was held in the dance studio.
That dance studio had a taped boxball court on its floor. And at every lunch period — not just during class — there was a line wrapped around it. Ninth, tenth, eleventh, twelfth grade. Kids from every discipline in the building. Singers, dancers, visual artists, theater students — a large portion of whom had come from sports backgrounds before the academy took over their schedules. Boxball was our outlet.
What happened on that court looked different from any boxball you'd seen on a playground. Movements that required real athleticism. Reads on ball trajectory and placement that felt closer to a pro sport than a recess game. Lateral quickness, controlled returns, the ability to know — instantly — how hard to send a ball back. The game didn't need strength the way football or basketball did. It needed judgment, timing, and court sense. And the kids who were good at it were really good at it.
That was the seed. It took fourteen years for the idea to translate into motion. In 2024, after the Paris Olympics brought the question roaring back, the first version of the Gridball rulebook was drafted. In 2025, the National Gridball League was formalized as a Florida LLC. In 2026, the NGL is running its first public playtests.
There's a quiet movement happening in adult recreation. A generation that grew up on playground games is refusing to leave them behind — bringing them back with officials, with calendars, with sponsorships, with broadcast partners, with the kind of competitive structure that says this was always a real sport. Kickball is leading the conversation.
NGL and Gridball are part of the same conversation, not competition for it. Kickball got its shine first — rightfully so. Now it's boxball's turn. Same blacktops, same recess bells, same generation. A different ball, a different corner of the playground, and a name that's new because we had to make one up — but the feeling is the same.
Everyone's played this game, under some name, in some version. Maybe it was chalk squares on the blacktop at recess. Maybe it was painter's tape on the floor of a dance studio. Maybe it was cousins at a family cookout, a bouncy ball nobody wanted to admit they'd thrown in the bushes when the adults weren't looking.
And you remember how it felt. The queue wrapping around the court. The one kid you could never eliminate, and the one who got you every single time. The rule arguments. The afternoons you finally cracked the top spot and held it for one more round before the bell rang. The specific satisfaction of a return so perfectly placed the other side didn't even bother diving for it. Sneakers squeaking. Chalk on your hands.
That's why you're here. Gridball is built for the people who remember — and who want to come back and play that game again, for real this time, with teammates who feel it the same way you do.
NGL exists to prove that boxball always deserved to be a real sport. Gridball is the answer. The league is the infrastructure that makes the case.
We're building toward the top tier — sanctioned professional play on purpose-built Gridball courts, officiating crews, broadcast partners, a real competitive calendar. International sanctioned play sits on the same arc. The accessibility at the pickup level stays intact — any street, any parking lot, any dance studio — but the ceiling is a full professional league. Everything below is built in service of that goal.
NGL is in its pre-launch phase. We're running playtests, filling rosters, training officials, and building the ranking system on real match data. If the words on this page resonated — as a player, as a volunteer, or as someone who just wants to follow along — here's where to start.