Why one arena a day
Snakoff started from a simple question: what would Snake feel like if everyone played the same game on the same day? Not the same kind of game, but the very same arena, with the same walls and the same food appearing in the same order. This post explains why we built it that way, what it costs us, and a few things we changed once real players arrived.
A score that means something
In most Snake games a high score is a private thing. Your board isn't my board, the food falls differently for each of us, and a lucky spawn next to your head can be worth more than a minute of good play. That's fine for a quick game, but it makes comparing scores close to meaningless.
With one arena a day, a score is a statement about the same problem. If you ate 18 and I ate 14, you played that arena better than I did. There's no "my food was in the corner" excuse. That's what makes a knockout tournament possible at all: a cut line only feels fair when everyone faced the same board.
It also gives the day a shared topic. The arena has a name, a place and a mode, and anyone who played it knows the awkward corner or the narrow corridor everyone talks about. Yesterday's arena stays around as Practice, so you can go back and try the route you wish you'd taken.
Built from the date
Each day's board is generated from the date itself. The shape, the walls, the food sequence, the place it's drawn in and the day's mode all come from the date's own seed, so every device builds exactly the same arena without downloading it. A new one appears at 00:00 UTC for the whole world at once.
That same determinism is how we keep scores honest. A run is stored as a short list of turns, and the server replays those turns on the same board with the same game code the app uses. If the replay doesn't land on the same score, the run doesn't count. We don't have to trust the phone, only the rules.
We were careful to keep old days stable. When we added new modes, new arena shapes and hazards, each one was switched on from a specific date. A day that was already played keeps the board it had, so its replays still check out.
The cost: one board has to suit everyone
The trade-off is that a single arena has to work for a beginner and for the best player of the day. A board that's too open makes everyone's score bunch up; one that's too cramped ends half the runs in the first few seconds. We measure boards with bots before they ship rather than guessing, and when we made the arena larger we added more walls to keep the typical score about where it was.
Some days will still be harder than others, and that's part of the format. A tough board is tough for everybody, and the median cut moves with it, so a hard day doesn't knock more people out. It just means the line sits lower.
Time zones and the day
One arena a day raises an obvious problem: a day in UTC is morning for some players and the middle of the night for others. Round 1 is open for half the day or more partly for this reason.
Our first version gave every round a fixed window. That was simple, but it meant a player in the wrong time zone could qualify for Round 2 and then have no sensible hour to play it. So we changed it. Everyone who qualifies for a round after the first now gets a personal window to play it: four hours, or eight for the final, starting from the first time they open the app after the round opens. Windows never run past a hard end, so the day still finishes, but the final can now run into the next UTC morning, up to 08:00.
The cost of that change is that results take longer. A round now closes only when every qualified player has played or run out of time, so the champion appears later than it used to. We think that's the right trade: a day that's only winnable from one continent isn't really a world tournament.
Why not more arenas?
We're sometimes asked why there isn't a new board every round, or a choice of arenas. The answer is that the shared board is the point. Later rounds do get harder, faster in Round 2, one food fewer in Round 3, both in the final, but the walls and the food order stay the day's own. You spend the day getting to know one place, and by the final you've earned the right to play it at its hardest.
If you want variety, Endless and Practice are always there. The tournament itself stays one arena, one day, the same for everyone.