THE HARBOURMASTER'S MANIFEST · PARENTS & CARERS BRIEFING
High on the vermilion gantry cranes of RiddleWharf, Chief Navigator Riddla Quayle inspects the structural bearings of every vessel before the lock-gates open. In plain terms, RiddleWharf is an independent British directory of nine free-to-play browser logic and puzzle games. We do not host games, create player accounts or process payments on this website; instead, we provide verified factual briefings so young people, parents and carers can see how each game works before visiting its official website.
Every game featured on The Quay and in the Watchtower Ledger carries a standardised facts block immediately above its official website button. Checked on against each publisher's official information, that strip answers four practical questions at a glance.
All nine games in our manifest can be played in a web browser at no initial cost. The lead line of every facts block states whether a game is free to play with no in-game purchases (such as NandGame, 2048 or Jigsaw Explorer) or whether its official site offers optional paid extras, subscriptions, supporter tiers, ad removal or merchandise.
Many free browser puzzles fund their hosting through display banners or video adverts around the game board. Our Ads entry tells you whether a game shows no adverts, displays commercial banners on the page, or offers an optional paid upgrade or subscription that removes advertising.
Our Account entry states whether a player can start immediately without registering. Across our selection, browser play begins without an account, though several games offer optional registration if a player wishes to sync cloud progress across devices, save custom statistics or enter ranked ladders.
Most logic puzzles on RiddleWharf are solitary single-player challenges with no chat facility at all. Where a game includes shared tables or live matches against other players — specifically Jigsaw Explorer and TETR.IO — our Chat entry highlights how communication works so you can discuss ground rules beforehand.
Below are three live facts blocks exactly as they appear on our game cards, showing how a completely purchase-free solo puzzle compares with games that include optional purchases or online multiplayer chat. Select Rating & source on any strip to inspect its verification basis.
Free to play · No in-game purchases
No PEGI rating published for the browser version · Based on Olav Junker Kjær's official information, checked 26 October 2026.
Opens the official NandGame site. It has its own rules and privacy policy.
Free to play · No in-game purchases
No PEGI rating published for the browser version · Based on Easybrain's official information, checked 26 October 2026.
Opens the official Sudoku.com site. It has its own rules and privacy policy.
Free to play · Includes in-game purchases
No PEGI rating published for the browser version · Based on osk's official information, checked 26 October 2026.
Opens the official TETR.IO site. It has its own rules and privacy policy.
Even when a game is free to open in a web browser, understanding how digital payments work — and how to lock them on phones, tablets, computers and consoles — helps families prevent unexpected charges.
In-game purchases are optional digital items, features or subscriptions that a player can buy with real money while playing a game or visiting its website. In browser puzzle games, these most commonly take the form of:
Paid random items (often called loot boxes, mystery crates, card packs or gacha spins) are a specific type of in-game purchase where a player pays real money — or spends virtual currency bought with real money — to open a container whose exact reward is chosen by chance. Because the player does not know which item they will receive before paying, paid random items can encourage repeated spending in pursuit of a rare item. Always check whether a game's store sells fixed, clearly named items or randomised mystery packs.
Phones, tablets, computers, games consoles and digital app stores all include built-in spending controls that parents and carers can switch on. Several browser puzzles also display links to companion mobile apps on the Apple App Store or Google Play, where one-tap billing may be active if a payment card is saved to the device.
Practical tip: Never leave a credit card, debit card, PayPal account or mobile carrier-billing method unlocked on a shared device without password verification enabled for every single purchase.
Because open-web browser games are often published directly by independent studios without a boxed retail release, knowing how UK age ratings work — and where each publisher sets out its own legal terms — puts you in full command.
In the United Kingdom, video game age ratings are provided by PEGI (Pan European Game Information). A PEGI age label (PEGI 3, 7, 12, 16 or 18) indicates whether a game's content is suitable for a particular age group — it does not measure how difficult the puzzles are.
When you or a young person select a Visit Official Site button on RiddleWharf, you leave riddlewharf.org and travel to an external website operated by that game's developer or publisher.