Open World
Endless arena. Stay as long as you stay alive, and cash out when you dare.
A player's stake rides on their orb. Eat a smaller one and their entire stake transfers to you. Get eaten, and yours is gone. No dice, no reels — continuous movement, split, eject. Your hands are the edge.
Demo world is free play-money, never withdrawable · Read the terms first
The commission never touches your stake — it is taken on what you won, at the moment it settles. Win nothing, pay nothing.
Break even or lose? The house takes $0.
Same rule everywhere: Open World cash-outs and Timed Rounds payouts settle identically.
Endless arena. Stay as long as you stay alive, and cash out when you dare.
A 3:00 match. Survive the horn and you keep your stake plus everything you ate.
Learn the floor for free, then play for real — as two separate accounts in two separate worlds.
Earn 30% of the house edge your invitees generate. Real accounts only.
You’ve read the terms — the rest is skill
Eat · Take their money · Cash out alive
Your balance starts at 0 and is funded only by USDC deposits.
Play-money credits in a separate world; no wallet, deposits, withdrawals, or conversion.
This will be your only login. Copy it before you continue.
The only key to your real-money account. Write it down before you continue.
The name other players will see.
Skip and you play under a generated name — change it anytime from your profile.
Add Roundz to your home screen: no browser bars, true full screen — especially in landscape.
Add 0 USDC to enter the lowest table. What you deposit is what you play with — no fee on the way in.
The referral program pays USDC on real play. Open a Real account — a Web3 wallet or a 12-word recovery phrase — to get your invite link.
The house keeps 10% of profit only — you take 30% of that cut, in USDC, for as long as your invitees play.
Eat. Take their stake. Bank it. Sixty seconds of reading.
Your buy-in rides on your orb for the whole run. There are exactly three ways it can end.
A bite only takes mass. A stake moves only when someone is finished off — see 02 Eat below.
The four things you do in a run, in order.
Pick a tier, $1–$100. Your buy-in rides on your orb; each tier is its own isolated arena.
Bites take mass. Money moves once: eliminate every last cell and their whole stake lands on yours.
Dodge bigger orbs and the cyan spikes: over 250 mass you pop on contact. A pop sheds mass — your stake stays on you.
Open world only. Survive your tier's entry lock (5s at $1 → 3:00 at $100), then a 4–20s countdown you stay edible through. Rounds settle at the horn instead.
Open world runs forever and you leave when you dare; a round has a clock and settles for everyone at the horn.
Every figure the game runs on, in one place.
= 1 USDC in the Real world · free play-money in Demo
commission — on profit only, cash-outs and round settlements alike
mass at a spike and you pop on contact; lighter passes freely
ejected blobs (W) fed to a spike fire it in that direction
six tiers, each an isolated world
Rounds only — round length; it ends early once one orb is left or no humans remain
Open world has no clock — no round timer, no session cap. You leave by cashing out; being eaten, melting outside the zone, or walking away mid-life all cost you the stake
disconnect grace: your orb stays, uncontrolled and edible, while you reconnect
referral share of the house's cut — real accounts only
Move, split, eject — on a mouse or a phone.
Who holds the money, who computes the result, and why the two worlds never mix.
Physics and money run on the server; your screen only draws. Hacking the client changes nothing.
Demo runs on free play-money credits; Real runs on USDC. Balances never convert between the worlds, in either direction.
In the Real world you top up by sending USDC to your personal deposit address; withdrawals are paid out automatically after a short anti-fraud delay. Large amounts get a manual check — and so does your first withdrawal on a recovery-phrase account, whatever its size.
Every credit is either riding on a player, banked, or house — the books are machine-checked on every test run.
The questions people actually ask.
In the Real world, yes — you play for USDC (1 credit = 1 USDC). Log in with a Web3 wallet or a 12-word recovery phrase; either way you fund the account by sending USDC to your personal deposit address and withdraw to any Solana address. In Demo, never: demo credits are free play-money that can't be withdrawn or converted into the Real world. The two worlds are fully separate.
Your orb stays in the arena for a ~30-second grace window — uncontrolled and still edible — while your client silently reconnects into the same match. Eaten meanwhile? The eater takes your stake, as usual. Not back in time? The stake forfeits — by design, so nobody "ghost-parks" money in the arena. Pulling the plug during a cash-out cancels the cash-out. Lobby sessions resume automatically after a refresh.
Anti-snipe. Each tier has an entry lock (5s at $1 up to 3:00 at $100), then cashing out runs a visible 4–20s countdown during which you can still be eaten. Committing to leave is a play, not an escape hatch. Open world only — rounds settle at the horn.
Spikes. Orbs heavier than 250 mass pop into pieces on touch — a pop costs mass, never your stake. Feed a spike 3 blobs (W) and it fires in that direction: a whale-hunting weapon.
The house earns 10% of profit (never your principal) — on open-world cash-outs and on every round settlement that ends up, for each player in profit — plus stakes lost to the zone or forfeited by leaving mid-life. 30% of the cut a referred player generates goes back to their referrer (real accounts only).
You decide. Profile → Disclosure: hide yourself from the leaderboard, and your P&L is private by default — flip the toggles anytime.
Yes — while the launch crowd is still arriving, arenas are kept warm by house bots (marked with a robot tag in-game) and parts of the demo lobby feed simulate activity. Bots are house-funded in both worlds: in Demo they're subsidised with play credits, and in the Real world they stake from the house's own USDC pool — eating one pays you from the house, never from another player, and a surviving bot's stake returns to the house. As real players fill the arenas, the bots step back.
Have your demo code, wallet, or recovery phrase ready to log in once. Your account and balance are the same.
Saved on this device.
Auto drops effects on slow devices to hold the frame rate; the button overrides.
How do you want to move? Change anytime with the gear button.
Cashed out alive
Banked to balance
Real funds on Solana. Your Roundz balance is that USDC — nothing is converted.
⚠USDC on the Solana network only. Sent from another chain — or as another token — it cannot be recovered by anyone.
No memo or tag, any amount. Lands as balance, to the cent, in about a minute while this window is open — otherwise the next time you open Roundz.
Real · USDC
Sign in with the wallet that holds your USDC.
Phantom
Use the wallet in this browser, or jump to the Phantom app.
The link to the server dropped. Reload to log back in — a live run is held ~30s, then the stake is lost.
Connection dropped. If you were live in the arena, your orb is being held for a short grace window (still edible — hurry). Getting you back in…
Your stake was taken by whoever ate you — you're out.
The menus are built tall — turn your phone upright to browse. Landscape is for playing.
Or add Roundz to your Home Screen — the app works both ways.