What Is Onyx Odds? The Sweepstakes Social Sportsbook, Explained

If you know DraftKings Sportsbook, you already know most of Onyx Odds: you make picks on markets priced at real odds (a team moneyline, a player prop, a parlay across a slate), each with its own price and its own payout. What changes is the currency and the law behind it. Onyx Odds is a sweepstakes social sportsbook. You never wager cash; you play with virtual coins under sweepstakes rules, and only one of its two coins ever turns back into a real prize. That single swap is why an odds-based book can run in states where a licensed sportsbook cannot, and why "it looks like DraftKings, but it isn't real money" is the sentence that unlocks the whole app.

The one thing that trips up every first-timer is the coin split: Onyx runs on two virtual currencies, and only one of them ever turns into a prize. Get that straight and everything else falls into place, so that is where we spend the most time before walking through the welcome offer, the states where you can (and cannot) play, and the part you can actually control: how to tell whether the pick you are about to make is priced well enough to be worth it.

In Summary

• Onyx Odds Is A Sweepstakes Social Sportsbook (operated by Onyx Games LLC), not a real-money book. You make odds-based sports picks (moneylines, player props, parlays) with virtual currency; there is no real-money wagering.
• It Plays Like A Sportsbook, Not Pick'em. Every market carries its own displayed odds, and a big game can post a full board with dozens of markets, so it is closer to DraftKings than to the fixed over/under multipliers on PrizePicks or Underdog.
• Two Currencies: Onyx Coins are for standard (for-fun) play and carry no cash value. Onyx Cash (a.k.a. Games Cash) is the promotional currency you can eventually redeem for real prizes.
• It Is Free To Play, No Purchase Necessary, And 18+ (21+ where your state requires it). You can request Onyx Cash through the site's free method without ever buying a coin pack.
• Welcome Offer: spend $10 and get up to 100 Onyx Cash in bonus picks on your first purchase, with code STOK1. Confirm the live offer in-app before buying.
• Not Available Everywhere. Onyx is excluded in AL, CA, CO, CT, ID, IN, LA, ME, MI, MT, NV, NJ, NY, TN, WA, and WV.
• The Pick Still Has To Be Right. Free virtual currency does not make a bad price a good bet, and that is where projections come in.

What "Sweepstakes Social Sportsbook" Means

A sweepstakes sportsbook borrows its legal footing from the same model behind no-purchase-necessary promotional sweepstakes and prize giveaways, not from state sports-betting licenses. Onyx Games LLC runs Onyx Odds under those sweepstakes rules, which is why it can operate across many states that have never legalized a real-money book. You are never placing a cash wager. You are playing a game with virtual coins on real odds, and a promotional pool of coins can be redeemed for prizes. That is how Onyx positions the product under sweepstakes rules rather than state-regulated real-money sportsbook licensing.

Two rules fall straight out of that model, and they matter. First, no purchase is ever necessary: because it is a sweepstakes, Onyx has to offer a free way to get the redeemable currency, so buying coin packs is optional convenience rather than a cost of entry. Second, you must be 18 or older to play (21+ where a state requires it). Keep both in your back pocket, because they frame the offer we get to below.

Onyx Coins Vs. Onyx Cash: The Two-Currency System

This is the part that trips up first-timers, so it is worth slowing down on. Onyx runs on two separate coins, and only one of them ever becomes a prize.

• Onyx Coins power standard mode, which is pure for-fun play. They have no monetary value, cannot be redeemed for anything, and are the sandbox where you learn the odds board without risking real money. You can buy them in optional coin packs, but they only ever buy you more play.
• Onyx Cash (Games Cash) powers promotional mode, the side that can actually pay out. You cannot buy Onyx Cash directly; it is awarded as a bonus (the welcome offer, ongoing promos, or the free no-purchase request method). Win with it and you can redeem it for real prizes once you satisfy Onyx's redemption rules: your bonus Onyx Cash generally has to be played through at least once in eligible games, your balance has to clear Onyx's minimum redemption amount, and redemption is subject to identity verification and approval. Onyx can apply additional playthrough or eligible-play conditions, so treat the in-app terms as the final word.

The one rule to remember: Onyx Coins are practice; Onyx Cash is the prize. Check which coin you are holding before you tap a pick, because that single choice decides whether a winning slip is a high score or a real reward.

Onyx Cash In Action: A Worked Example

Walk it through with the welcome bundle. Say you land 100 Onyx Cash from your first purchase. You put 10 of that Onyx Cash on an MLB hitter to clear his total-bases prop (a market priced at real odds in promotional mode), the pick hits, and the winnings come back to you as Onyx Cash. That balance is not yet a prize, though. It becomes redeemable only after your bonus Onyx Cash has been played through in eligible games and your balance clears Onyx's minimum redemption amount, which the app shows you at checkout. So if a run from 100 up to, say, 140 Onyx Cash meets that minimum and satisfies Onyx's eligible-play and verification rules, you can request a prize redemption; a balance that dips below the redemption floor 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. Hold that redemption floor in mind, because it comes back when we talk about the welcome offer.

How Onyx Odds Compares To DraftKings, PrizePicks, And Underdog

Here is where the framing from the intro earns its keep. On mechanics, Onyx sits much closer to a real-money book like DraftKings Sportsbook than to a pick'em app: you are choosing sides on markets that each carry their own posted odds (moneylines, player props, game totals, parlays), not tapping the fixed "1.5x for two, 3x for three" over/under multipliers that define PrizePicks and Underdog. The only thing Onyx changes about that sportsbook experience is the money: it swaps the cash in and out for a virtual coin and leans on the sweepstakes model instead.

Feature	Onyx Odds	DraftKings (real-money book)	PrizePicks / Underdog
Model	Sweepstakes social sportsbook	Licensed real-money sportsbook	Real-money DFS pick'em
How Picks Are Priced	Real odds per market (full board per game)	Real odds per market	Fixed over/under multipliers
What You Play With	Onyx Coins (fun) + Onyx Cash (redeemable)	Cash deposits	Cash deposits
Real Money Wagered	No (virtual currency only)	Yes	Yes
How You Win	Redeem Onyx Cash for prizes after 1x playthrough	Cash winnings	Cash winnings
Free-To-Play Path	Yes (no purchase necessary)	No	Limited (deposit-based)
Age	18+ (21+ where required)	21+	18–21+ depending on state

The row that matters most is the middle one: no real money is wagered on Onyx. That is the trade. You get the odds-board depth of a full sportsbook (real prices, real parlays), but you give up the direct cash-in, cash-out simplicity of a licensed book, and in return you get an available, sweepstakes-based way to play in many states where those books cannot operate. If you are coming from the pick'em side, the muscle memory still transfers, but do not expect a fixed-multiplier board; you are reading odds now. Weighing Onyx against the apps you already use? Our rundown of the best PrizePicks alternatives, a primer on how to play Underdog Fantasy, and a breakdown of how PrizePicks multipliers work put that contrast in context.

The Onyx Odds Welcome Offer (Code STOK1)

Onyx's first-purchase deal is straightforward: spend $10 and get up to 100 Onyx Cash in bonus picks, shown in-app as "Up to 100 in Games Cash on your first purchase." Sign up through our link with code STOK1 applied:

Claim the Onyx Odds welcome offer with code STOK1 →

Two reminders flow straight from the sweepstakes model up top. Because Onyx is a sweepstakes, no purchase is necessary (you can request Onyx Cash through the site's free method), and you must be 18 or older to play (21+ where your state requires it). Offers move around, so confirm the exact terms in-app before you buy. And remember the currency lesson: that 100 Onyx Cash is the redeemable coin, which is exactly why it has to clear Onyx's playthrough, eligible-play, and minimum-redemption rules before it becomes a prize. Onyx sets prize values under its sweepstakes rules, so treat "up to 100 Onyx Cash" as bonus-pick value, not a promised or fixed cash figure.

Where Onyx Odds Is (And Isn't) Available

The sweepstakes model gives Onyx a wide footprint, but it is not everywhere. Onyx Odds is not available in AL, CA, CO, CT, ID, IN, LA, ME, MI, MT, NV, NJ, NY, TN, WA, or WV (per Onyx's official sweepstakes rules, and where otherwise prohibited). Live in one of those 16 states? The app will not let you play, and no promo code changes that. State rules around sweepstakes gaming shift as legislators revisit them, and the app's own geofence is the final word, so check that your state is eligible when you sign up rather than assuming today's list is permanent. If the sweepstakes-versus-real-money legal line is new to you, our explainer on whether prediction markets are legal walks through the same "different legal model, different map" logic that governs where these platforms can run.

Making Smarter Picks: Where Projections Come In

Now back to the promise from the top. A free pool of Onyx Cash lowers the cost of a bad pick; it does not turn a bad pick into a good one. And because Onyx is an odds board, not a fixed-multiplier app, being on the right side is only half the job: the price you take has to be worth it too. A market with real odds carries an implied probability baked into that price, and your edge is the gap between what the projections say will happen and what the odds say the market expects.

That habit is the one that separates a for-fun account from one that actually redeems. Before you submit a slip, run the same names through Stokastic Prop Tools, our PrizePicks- and Underdog-style projection engine that grades every player line so you can see which "more" or "less" side the numbers favor instead of guessing. Picture a night where the tool surfaces an MLB hitter projected for 1.8 total bases against a posted line of 1.5: the projection clears the number, and once you check that Onyx's odds on that "more" are not shading the price too far against you, you tap it with conviction instead of a hunch. Flip it, and a hitter projected for 1.3 total bases against that same 1.5 line tells you to leave that "more" alone no matter how tempting the payout looks. Want the layer underneath the props? The Stokastic DataHub surfaces the projections, ownership, and matchup context those lines are built on, sport by sport. New to reading a projection against a posted line? Start with our DFS 101 beginner's guide and the DFS dictionary, then bring that eye to Onyx.

Onyx Odds, in the end, is a low-stakes, available-in-most-states front door to the sportsbook-style picks you already like: a place to play real odds-based markets without real money on the line. For eligible players, treat it like an odds-board practice account with redeemable sweepstakes currency — check the state list, know which coin you are holding, compare your projection to the posted price, and pass on any market where the odds have already erased the edge. Do that and the sweepstakes format stops being a novelty and becomes a lower-cost way to practice disciplined pick selection with real prizes on the table.

Onyx Odds FAQ

Is Onyx Odds legit? Yes. Onyx Odds is a real sweepstakes social sportsbook operated by Onyx Games LLC, running under the sweepstakes model rather than a state sports-betting license. That is also why it involves no real-money wagering: you play odds-based markets with virtual currency, and only Onyx Cash redeems for prizes.

Is there an Onyx Odds promo code? Yes — use code STOK1 through our sign-up link to claim the first-purchase welcome offer (spend $10, get up to 100 Onyx Cash). No purchase is necessary to get Onyx Cash, and you must be 18+ (21+ where required). Confirm the current terms in-app before buying.

Where is Onyx Odds available? Onyx operates across most of the country but is not available in AL, CA, CO, CT, ID, IN, LA, ME, MI, MT, NV, NJ, NY, TN, WA, or WV (per its official sweepstakes rules, and where otherwise prohibited). Eligibility can change, so verify your state at sign-up.

What is the difference between Onyx Coins and Onyx Cash? Onyx Coins are for standard, for-fun play and have no cash value. Onyx Cash (Games Cash) is the promotional currency you cannot buy directly. It is awarded as a bonus and can be redeemed for real prizes once your bonus Onyx Cash clears a 1x playthrough and your balance meets Onyx's minimum redemption amount.

Is Onyx Odds real-money betting? No. It is a sweepstakes social sportsbook, so no real money is wagered on your picks. You play odds-based markets with virtual coins the way you would at a book like DraftKings, and the redeemable coin (Onyx Cash) can be exchanged for prizes under the sweepstakes rules.