By the numbers

Roblox Server Sizes, by the Numbers

A player count tells you a game is alive. It does not tell you how many of those people will be in the room with you, and on Roblox those two numbers are not close.

Brookhaven RP had 665,338 people playing when we took our snapshot on September 20, 2026. You will meet at most 29 of them. Brookhaven's servers hold 30 players, so those 665,338 people were spread across at least 22,178 separate copies of the same town, none of which knows the others exist. The player count measures the game. The server cap measures your evening.

Roblox publishes both numbers on the same API record. The one nobody quotes is maxPlayers, the per-server player cap the developer sets, and it is the number that decides whether a game feels like a festival, a dinner party, or an empty street. This is what it says across our catalog.

The catalog is built out of small rooms

Of the 121 games in our catalog, 116 resolve to a live Roblox record, and 112 of those report a cap we can use. The median is 20 players. The mean is 30.4, dragged upward by a few outliers at the top.

Small is the norm. Of the 112 games, 33 cap a server at 12 players or fewer, and those 33 games held 1,506,800 of the 4,529,141 concurrent players in the snapshot: a third of everyone playing was in a room of 12 or less. Raise the line to 20 and it covers 62 games and 51.3% of players. Three quarters of the catalog, 83 games, caps at 30 or below.

Divide each game's players by its own cap and the catalog was running at least 273,321 rooms at once, an average of 16.6 people per room. That floor is generous to the games, because it assumes every server is full, and most are not.

GamePlayersServer capRooms at minimum
Brookhaven RP665,3383022,178
Murder Mystery 2407,1911233,933
Blox Fruits380,6181231,719
99 Nights in the Forest304,7072512,189
Rivals289,111407,228
Adopt Me228,879356,540
Jujutsu Shenanigans209,6012010,481
Steal a Brainrot138,177817,273
Dress to Impress116,550138,966
Fisch114,478205,724
Forsaken109,400912,156

Murder Mystery 2 is the clearest case. It is the second-busiest game in the catalog and it is played twelve people at a time, which is why its 407,191 players needed at least 33,933 rooms, more than any other game here.

The fullest servers are exactly as full as the cap

Roblox will also list a game's public servers, and it returns that list sorted by how full each server is. That means the first page of one sort order is the fullest servers the API will show, and the first page of the other is the emptiest. These are the two ends of a sorted list rather than a random sample, so they answer a narrow question well: what does a full room look like, and what does an empty one look like.

For the busiest games the answer is blunt. All 100 of the fullest Brookhaven servers held exactly 30 of 30. All 100 of the fullest Murder Mystery 2 servers held 12 of 12. The same was true of Grow a Garden at 4 of 4, Flee the Facility at 5 of 5, Steal a Brainrot at 8 of 8, and Forsaken, where every one of the 100 fullest servers was at its 9-player cap or a player over it. In each case the list continued past the hundred we read, so those are not the only full servers, just the ones we counted.

Grow a Garden is the number that surprises people. A game that drew 42,484 concurrent players does it four at a time, which means at least 10,621 gardens were running in parallel.

At the other end of the same lists, the emptiest servers are exactly as empty. Brookhaven's hundred emptiest each held one person. So did Blox Fruits'. Murder Mystery 2's ran one or two. A game with hundreds of thousands of players is simultaneously running thousands of rooms with a single person in them.

Where the room never quite fills

Not every game packs out. Blox Fruits shares Murder Mystery 2's 12-player cap, but only 25 of its 100 fullest servers were actually at 12, with the rest at 10 or 11. In 99 Nights in the Forest, not one of the hundred fullest servers had reached the 25-player cap; they ran 19 to 24. Tower of Hell is a partial exception in the other direction: 9 of its fullest hundred sat at the 20 cap, the rest at 16 to 19.

The pattern is sharper in the big-room games. Doors allows 50 and its fullest servers ran 41 to 47, none at the cap, while its emptiest hundred ranged from 1 to 29, the widest spread we measured. Tower Defense Simulator also allows 50 and topped out at 38. A high cap is a ceiling, not a promise.

The genuinely big rooms

Twelve of the 112 games cap at 50 or more, and they are where you actually meet a crowd. Creatures of Sonaria and Tower Battles both hold 75, though only the first was busy: Sonaria had 39,503 players with its fullest servers carrying 52 to 74, while Tower Battles had 577. Doors and Tower Defense Simulator hold 50, as do Emergency Hamburg, Pressure and Specter.

The outright largest cap belongs to Rise of Nations at 700, which suits a grand-strategy map. Its live picture is harder to read: it had 2,807 players, but its public list returned a single server holding 110 when we looked, so we can report its cap and not its distribution.

The rooms you will have to yourself

The reverse combination is a big cap with a small population, and it is the one worth checking before you load in. Islands allows 20 players. It had 970 across the whole game, and the fullest server the list would show us held two people. MeepCity allows 40 and had 245 players in six public servers, running from 9 to 20.

Others in the same shape: The Conquerors 3 allows 110 and had 72 players, Ultimate Driving allows 45 and had 103, Fashion Famous allows 40 and had 304, and Steep Steps allows 26 and had 49. None of that makes them bad games, and Islands in particular is built around your own island rather than a crowd. It does mean that a game designed to fill a room will not be filling one for you.

Matching the room to what you want

If you want to be among people, the cap has to be high and the game busy: Brookhaven, Doors, Creatures of Sonaria, Rivals at 40. If you want a fixed small group where everyone matters, the small-cap giants are built for exactly that, and they fill: Grow a Garden at 4, Flee the Facility at 5, Steal a Brainrot at 8, Forsaken at 9, Murder Mystery 2 at 12. If you would rather be left alone in a large space, the quiet big-cap games are the honest pick, and our solo guide goes further into games that work that way. For two people specifically, the duo list treats party size as the whole question, and the group list covers the other end.

Server size is also the missing half of any popularity number. Roblox Genres, by the Numbers measured where the players are; this measures how finely those players are cut up once they arrive. You can sort the catalog yourself on the trending page or browse all genres.

How we counted

Player counts and the catalog join come from the live-stats snapshot behind our game pages, refreshed from Roblox's official games API at 17:40 UTC on September 20, 2026. Server caps come from the same API, pulled at 17:42 UTC the same day for every mapped game in one batch. The public server lists were read between 17:43 and 17:54 UTC, once in each sort order for 17 games. All of it is first-party Roblox data, and every count moves by the hour.

Four limits apply. A cap is a ceiling rather than a target, as Doors and 99 Nights show. Only public servers are listed, so private servers are invisible to this method and to the counts. The two sort orders for a game were read seconds apart, and occupancy shifts between them, which is why The Mimic, whose 17 public servers both orders returned in full, showed a busiest server of 41 in one reading and 42 in the other.

The fourth limit is the one that removed games from this article. Four titles report a cap of 1: Demonfall, Grand Piece Online, Project Slayers and Type Soul. This is not a stray value in one field, because their listed servers say the same thing, and each of Grand Piece Online's hundred listed servers held 1 player of 1 while the game itself showed 19,201 concurrent players. Whatever those games are doing with their servers, the cap field is not describing it, so all four are excluded from every figure above. Between them they held 20,921 players, which is 0.5% of the total, and nothing here changes if you add them back as an unknown.