Doodly
Guides

The Doodly guide library

Everything worth knowing about mystery boxes, provable fairness, RTP and crypto payments — written without the marketing fog and with the maths shown.

Strategy7 min

Ten signs a mystery box site can be trusted (and five it cannot)

A practical checklist for evaluating any mystery box or crypto casino platform before you deposit, based on what is verifiable rather than what is claimed.

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Strategy7 min

Case Battles, Upgrader, Crash and Plinko — which suits you?

A plain comparison of Doodly's game modes by pace, variance, skill and typical session length, so you can pick one that matches how you like to play.

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Strategy8 min

Mystery box strategy: bankroll management that actually works

No system beats the house edge, but bankroll rules decide how long you play and how you feel afterwards. Here are the ones worth using.

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Crypto7 min

Withdrawals explained: payouts, review and transaction hashes

How a withdrawal request moves from pending to paid, why manual review exists, when you can cancel, and how to confirm the payout landed on-chain.

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Fairness6 min

How to verify any Doodly round yourself, step by step

A practical walkthrough: find your seeds, rotate them, re-run the HMAC and confirm your box opening or game round was exactly what the site said it was.

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Crypto8 min

Crypto deposits explained: USDT TRC-20, BTC, ETH and SOL

Which network to use, why the memo and network selection matter, how confirmations work and what to do if a deposit does not show up straight away.

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Math & RTP7 min

House edge vs RTP vs variance — the three numbers that matter

RTP tells you the long-run cost, house edge tells you the same thing from the other side, and variance tells you what tonight will actually feel like.

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Basics7 min

How Doodly's prize pool coverage unlocks grand prizes

The McLaren and Bentley only become drawable once the prize pool covers them several times over. Here is exactly why that rule exists and what it means for you.

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Math & RTP8 min

RTP explained: what "90% return to player" actually means

RTP is the single most misunderstood number in online gaming. Here is what it measures, what it does not promise, and how to read it on boxes versus games.

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Fairness9 min

How provably fair works: HMAC-SHA256 explained simply

Provably fair means you can re-run your own roll and prove the site did not cheat. Here is the seed-and-hash system behind it, without the cryptography degree.

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Basics8 min

What is a mystery box site? A complete beginner's guide

Mystery box sites let you pay a fixed price to open a box with a randomised prize. Here is how they work, what you can win, and what to check before you play.

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Ready to put the theory to work?

Open a box, then verify the roll yourself in under two minutes.

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