Short answer: they're not quite the same kind of product. Skillz is an SDK/developer platform that powers dozens of partner apps (Solitaire Cube, 21 Blitz, Blackout Bingo among them), while WorldWinner is a single, direct app owned by FanDuel/Flutter with its own card-and-word catalogue. Both are publicly legitimate — the real differences are in variety, consistency, and how fast you actually get paid.
Skillz: A Platform Behind Many Apps
Skillz (NYSE: SKLZ) is publicly traded, but it isn't one game you download — it's the technology layer other developers plug into to run their own real-money cash competitions. That's why you'll see a "Powered by Skillz" badge inside apps like Solitaire Cube, 21 Blitz, and Blackout Bingo. The upside is variety: dozens of games across different genres, all running on the same underlying platform and payout rails. The downside is consistency — since each partner app is built by a different developer, matchmaking quality and payout experience can vary from app to app, and Skillz's overall paying-user base has been shrinking in recent years.
WorldWinner: One App, a Longer Track Record
WorldWinner has been operating since 1999 and is now owned by FanDuel/Flutter, one of the largest names in regulated real-money gaming in the US. It's a single, direct app rather than a platform, with a catalogue that leans toward classic card and word games. That focus makes for a more consistent experience match to match, though the selection is smaller and more old-school than Skillz's partner network.
Head-to-Head Comparison
| Skillz | WorldWinner | Kokomo | |
|---|---|---|---|
| Product type | SDK/platform powering many partner apps | Single direct app | Single direct app |
| Game variety | Dozens of games across partner apps | Cards and word games | Snake, 2048, Ludo, Plinko, Flappy Dunk, Higher or Lower |
| Ownership | Publicly traded (NYSE: SKLZ) | Owned by FanDuel/Flutter | VC-backed (Redbeard Ventures) + Avalanche partner |
| Match format | Multiplayer cash tournaments (varies by partner app) | Multiplayer cash tournaments | 1v1 Real Money Match vs one named opponent |
| Payout method | PayPal / bank transfer | PayPal | Fast, same-day payout to your own account |
| Free-to-play path | Varies by partner app | Limited | Gold ladder — play free, earn bonus cash into paid matches |
Payout Speed & Reliability
Both Skillz and WorldWinner pay through PayPal (Skillz also offers bank transfer on some partner apps), and both are established enough to be trusted for withdrawals. The trade-off with Skillz specifically is that because it's a platform underneath many different apps, your actual payout experience depends on which partner app you're playing — some are faster and better-reviewed than others. WorldWinner's single-app model avoids that variability but comes with a smaller game selection.
Kokomo sidesteps both trade-offs with one consistent product: fast, same-day payouts to your own account across every game on the platform, unlocked after your first paid entry and a quick identity check, with no minimums.
Tip: if you're trying a Skillz-powered app for the first time, check reviews for that specific partner app rather than assuming every Skillz game behaves the same way — the underlying platform is shared, but the on-the-ground experience isn't.
The Bigger Structural Difference
Neither Skillz nor WorldWinner matches you against one clearly identified opponent — both run pooled multiplayer cash tournaments where you're scored against a batch of other players. Kokomo's Real Money Match works differently: you and one real, identified opponent play the same game, and whichever of you scores higher takes the pot. No bracket, no anonymous pool — just two scores you can both see.
For more on each platform individually, see our Skillz alternatives and WorldWinner alternatives guides, or our broader roundup of the fastest-paying real-money game apps.