Onyx Odds Promo Code OS100: Get 100 In Bonus Picks
If you already build slips on PrizePicks or Underdog, Onyx Odds will feel familiar the moment you open it: pick a player, pick more or less on a line, stack a few and go. The welcome deal is what pulls new players in the door. With Onyx Odds promo code OS100, you spend $10 on your first purchase and get up to 100 in Bonus Picks to play with, and just registering unlocks 1,000 Onyx Coins for free social play before you spend a dime. The catch worth understanding before you claim it is not the offer itself, which is real, but what those Bonus Picks are made of, because Onyx is a sweepstakes social sportsbook, not a real-money book, and only one of its two currencies ever turns back into a prize.
The one decision that actually matters is simple: your $10 first purchase triggers the OS100 promo, which awards a stack of Bonus Picks (the redeemable currency, shown in-app as Games Cash) on top of the play-money Onyx Coins your $10 buys, and the trap is confusing the two. Get that split right and claiming OS100 is a few taps. The part that decides whether those Bonus Picks ever become a payout comes last, because a free bankroll only helps if the picks you make with it are right.
In Summary
- The Offer: use Onyx Odds promo code OS100 on your first purchase to spend $10 and get up to 100 in Bonus Picks (shown in-app as "Up to 100 in Games Cash on your first purchase"). Registering also unlocks 1,000 Onyx Coins for free social play. New players only; subject to terms; confirm the live offer in-app before you buy.
- What Onyx Odds Is: a sweepstakes social sportsbook operated by Onyx Games LLC. You make player predictions with virtual currency, so there is no real-money wagering.
- Two Currencies: Onyx Coins are the free, for-fun social-play currency and carry no cash value. Games Cash (the in-app name for the promotional currency the rules call Sweeps Cash, awarded as Bonus Picks) is what can be redeemed for prizes. Your 100 in Bonus Picks lands as Games Cash.
- Free To Play, No Purchase Necessary, 18+. Because it is a sweepstakes, Onyx offers a free way to request Games Cash without buying anything.
- Not Available Everywhere. Per Onyx's official sweepstakes rules, it is excluded in Alabama, California, Colorado, Connecticut, Idaho, Indiana, Louisiana, Maine, Michigan, Montana, Nevada, New Jersey, New York, Tennessee, Washington, and West Virginia. Eligibility can change, so the signup flow is the final word for your state.
- The Pick Still Has To Hit. A free stack of Bonus Picks lowers the cost of a bad pick; it does not make a coin-flip a good one. A no-vig price check earns its keep right there.
What The Onyx Odds Promo Code OS100 Gets You
Onyx's first-purchase deal is the reason to grab a code on your way in. Spend $10 on your first Onyx Coin purchase with code OS100, and Onyx credits you up to 100 in Bonus Picks, which the app frames as "Up to 100 in Games Cash on your first purchase." Register first and you also get 1,000 Onyx Coins free to feel the app out before spending anything. Sign up through our link with OS100 applied:
The OddsShopper Odds Screen.
Claim the Onyx Odds welcome offer with code OS100 →
| Detail | What to know |
|---|
| Headline Offer | Spend $10, get 100 in Bonus Picks |
| Register Bonus | 1,000 Onyx Coins free for social play, before any purchase |
| The Code | OS100 — applied automatically through our sign-up link |
| In-App Wording | "Up to 100 in Games Cash on your first purchase" |
| What The 100 Is | Up to 100 Games Cash (Bonus Picks), the promotional currency you redeem for prizes under the sweepstakes rules |
| Who Qualifies | New players only, 18+, in an eligible state |
| The Honest Catch | It is a first-purchase match; the Bonus Picks arrive as Games Cash and must clear a playthrough before you can redeem them |
The row that matters most is the last one. The 100 does not land as cash you withdraw the second you buy in. It arrives as Games Cash, the promotional currency, and it becomes a real prize only after you have played it through and cleared Onyx's minimum redemption amount. Onyx's rules require Games Cash to be played through at least once in an eligible game before any winnings can count toward redemption, so confirm the current playthrough requirement in-app. That is not a hidden catch; it is how a sweepstakes has to work, and it is the whole reason Onyx can run in states a real-money book cannot. Hold that playthrough rule in mind, because it comes straight back when we walk a real example.
Onyx Coins Vs. Games Cash: What Your Bonus Picks Actually Are
This is the distinction that trips up first-timers, so it is worth slowing down on. Onyx runs on two separate currencies, and only one of them ever becomes a prize.
- Onyx Coins power standard mode, which is pure for-fun prediction. They have no monetary value, cannot be redeemed for anything, and are the sandbox where you learn the app, and the 1,000 you get for registering live here. You can buy more in optional coin packs, but they only ever buy you more play.
- Games Cash (the in-app name for the currency the official rules call Sweeps Cash, awarded to you as Bonus Picks) powers the side that can actually pay out. You cannot buy Games Cash directly; it is awarded as a bonus, which is exactly what the OS100 welcome offer does. Win with it and you can redeem it for prizes once you have played it through (Onyx's rules require it to be used at least once in an eligible game) and reached Onyx's minimum redemption amount. Confirm the exact playthrough in-app, since Onyx can require more than one play.
The one rule to remember: Onyx Coins are practice; Bonus Picks (Games Cash) are the prize. Your 100 in Bonus Picks is the redeemable side, which is exactly why it is worth claiming and exactly why it carries a playthrough before it cashes out.
That is why "Bonus Picks" is the right way to read the offer: you are getting a bankroll of the redeemable currency to make picks with, not a $100 bill dropped in your account. Now watch what that looks like on an actual slip.
How The 100 In Bonus Picks Plays Out: A Worked Example
Walk it through with the welcome bundle. Say you spend your $10 and land 100 Games Cash in Bonus Picks from code OS100. You put 10 of that on an NBA guard to go over his points line in the promotional mode, the pick hits, and the winnings come back as Games Cash. That balance is not a prize yet. It becomes redeemable only after it has been played through, the requirement from the section above, and once it clears Onyx's minimum redemption amount. So a run that pushes your Bonus Picks balance up and over that redemption threshold can be exchanged for a real prize; a balance that never gets there cannot, no matter how it got there. Onyx Coins, by contrast, never make that jump no matter how many you stack, because they are practice, full stop. That playthrough-then-redeem gate is the detail I keep coming back to, because it is the line between a high score and a real payout.
How To Claim The Onyx Odds Offer, Step By Step
Claiming OS100 takes just a few minutes.
- Tap our Onyx Odds sign-up link. Open our Onyx Odds sign-up link. It carries code OS100 and routes you to Onyx.
- Create your account and verify your details. Complete Onyx's registration and eligibility checks, including confirming your location so the app knows your state is eligible. Registering lands your 1,000 free Onyx Coins.
- Make sure code OS100 is applied. Signing up through our link should attach it automatically. If you see a promo field, enter OS100. This is the step that turns the welcome offer on.
- Make your first $10 purchase. Buy your first Onyx Coin pack of at least $10 to trigger the match. Remember, no purchase is necessary to receive Games Cash through Onyx's free method, and the purchase is only what unlocks this first-purchase bonus.
- Play your Bonus Picks. Your 100 in Games Cash lands as Bonus Picks. Make your picks in the promotional mode, clear the playthrough, and reach Onyx's minimum redemption amount to cash out for a prize.
Ready to claim it? Sign up for Onyx Odds with code OS100. Spend $10 on your first purchase and get up to 100 in Bonus Picks, plus 1,000 Onyx Coins free just for registering. No purchase is necessary to play, and you must be 18+. Confirm the current terms in-app before you buy.
New players only. Eligibility and location requirements apply; not available in every state. Onyx Odds is a sweepstakes social sportsbook, so there is no real-money wagering, and no purchase is necessary to receive Games Cash. Bonus Picks are credited as Games Cash that carries a playthrough requirement and a minimum redemption amount before redemption, not a guaranteed return. Subject to terms; confirm the current offer and full terms in-app before you buy.
Where Onyx Odds Is (And Isn't) Available
The sweepstakes model gives Onyx a wide footprint, but it is not everywhere. Per Onyx's official sweepstakes rules, the game is open to US residents 18 or older at the time of entry, excluding Alabama, California, Colorado, Connecticut, Idaho, Indiana, Louisiana, Maine, Michigan, Montana, Nevada, New Jersey, New York, Tennessee, Washington, and West Virginia ("and where otherwise prohibited"). Live in one of those states? The app will not let you play, and no promo code changes that. One wrinkle worth knowing: Onyx's separate terms of use also reference Illinois and Maryland, so if you live there, treat your eligibility as unsettled until the app confirms it. Two rules fall straight out of the sweepstakes model itself: because it is a sweepstakes, Onyx offers a free, no-purchase way to request Games Cash, and you must be 18 or older to play. State rules around sweepstakes gaming shift as legislators revisit them, so eligibility can change, and the signup flow is the final word for your state. If the sweepstakes-versus-real-money legal line is new to you, our explainer on whether prediction markets are legal walks through the same core idea: a platform's legal model, not a state betting license, is what decides where it can run.
Why This Sits Alongside The Sports Betting You Already Do
Coming from a sportsbook or a real-money pick'em app, the mental model barely changes, and one difference is the whole point. On a traditional book you deposit cash, take a house line, and cash out in dollars, with the book's margin baked into every number. Onyx swaps that dollar for a virtual coin and leans on the sweepstakes model instead. It is the same "more or less on a player line" muscle memory, running on a completely different engine underneath.
| Feature | Onyx Odds | Real-money sportsbook / pick'em |
|---|
| Model | Sweepstakes social sportsbook | Real-money betting / DFS pick'em |
| What You Play With | Onyx Coins (fun) + Games Cash (redeemable) | Cash deposits |
| Real Money Wagered | No (virtual currency only) | Yes |
| How You Win | Redeem Games Cash for prizes after a playthrough | Cash winnings |
| Free-To-Play Path | Yes — no purchase necessary | Limited (deposit-based) |
| Welcome Offer | Spend $10, get 100 in Bonus Picks (code OS100) | Varies by book |
The middle row is the one that actually defines the platform: no real money is wagered on Onyx. That is the trade. You give up the direct cash-in, cash-out simplicity of a real-money app, and in return Onyx may be available in some places where real-money betting or DFS apps are not, subject to its eligibility checks and state restrictions. For a lot of the betting crowd, that trade is the entire appeal. If you want a feel for how a platform's legal model decides where it can run, our primers on how prediction markets work and prediction markets vs. sports betting cover that terrain, though those markets run under their own federal framework rather than Onyx's sweepstakes model. Onyx Odds' current offer and the fine print live on our Onyx Odds promo page and how to claim it if you want it side by side with the rest.
Making The Bonus Pay Off: Where A Price Check Comes In
Now back to the promise from the top. A free stack of Bonus Picks lowers the cost of a bad pick; it does not turn a bad pick into a good one. Playing for coins or for Games Cash, a slip only redeems if the players you tapped actually beat their lines, and that is a pricing problem, not a currency one.
That habit is what separates a for-fun account from one that actually redeems. Onyx's picks are player props at heart, just more or less on a line, and many comparable player props sit on the boards at books like DraftKings, FanDuel, BetMGM, and Caesars. Before you lock a slip, price the same market with the free OddsShopper Odds Screen, which surfaces the best available number across 100-plus books and de-vigs it, stripping out the sportsbook's hold so you can read the true, no-vig price behind the line. Line the Odds Screen's no-vig projection up against Onyx's prop and you can see whether your pick sits on the value side before you tap it.
The read that matters: if the no-vig price says an over is a 58% shot but Onyx has you leaning under, the market disagrees with your slip, and that is your cue to think twice. Two books rarely price a prop identically, and a player prop can bake in a 5% to 7% hold, which is the edge you are trying to see through.
You are not chasing certainty; you are checking whether the pick Onyx is offering lines up with where the sharpest real-money markets have it priced. Do that a few times and you stop guessing which side of a line to tap. Onyx Odds, in the end, is a low-stakes, sweepstakes-model front door to the pick'em game you already like, and OS100 is a meaningful first-purchase offer if you understand the currency split, worth up to 100 in Bonus Picks for a $10 first buy plus 1,000 Onyx Coins just to register. Treat the Games Cash like it is real, respect the two-currency split, and let a no-vig price check pick your sides. Do that and the welcome bonus stops being a novelty and becomes a lower-cost way to practice disciplined pick selection with real prizes on the table.
Onyx Odds Promo Code FAQ
What is the Onyx Odds promo code?
Use code OS100. Signing up through our link applies it automatically; if you see a promo field during registration, enter OS100. Applying the code is what activates the first-purchase welcome offer: spend $10, get up to 100 in Bonus Picks (Games Cash). Registering also unlocks 1,000 Onyx Coins for free social play. No purchase is necessary to play, and you must be 18+.
Is Onyx Odds legit?
Yes. Onyx Odds is a real sweepstakes social sportsbook operated by Onyx Games LLC, a US-registered company, running under the sweepstakes model rather than a state sports-betting license. That also explains why it involves no real-money wagering: you play with virtual currency, and only Games Cash redeems for prizes.
What states is Onyx Odds available in?
Per Onyx's official sweepstakes rules, Onyx is open to US residents 18+ but is not available in Alabama, California, Colorado, Connecticut, Idaho, Indiana, Louisiana, Maine, Michigan, Montana, Nevada, New Jersey, New York, Tennessee, Washington, or West Virginia. Onyx's terms of use also reference Illinois and Maryland, so treat those as unsettled. Eligibility can change, so the signup flow is the final word for your state.
What is the difference between Onyx Coins and Games Cash?
Onyx Coins are the free, for-fun social-play currency and have no cash value, and you get 1,000 for registering. Games Cash (the in-app name for the Sweeps Cash the rules describe, awarded as Bonus Picks) is the promotional currency you cannot buy directly. It is awarded as a bonus, such as the OS100 welcome offer, and can be redeemed for prizes once you have played it through and reached Onyx's minimum redemption amount (confirm the current requirement in-app).
Is Onyx Odds real-money betting?
No. It is a sweepstakes social sportsbook, so no real money is wagered on your picks. You play with virtual coins, and the redeemable currency (Games Cash) can be exchanged for prizes under the sweepstakes rules.
Ready to claim it? Sign up for Onyx Odds with code OS100. Spend $10 on your first purchase and get up to 100 in Bonus Picks, plus 1,000 Onyx Coins free just for registering. No purchase necessary, 18+. Confirm the current offer in-app before you buy.
