The deal, in plain words

You log in with a magic link sent to your email, or with Google or Discord. There's no password.

One account per person. Extra accounts to collect more free blox aren't allowed, and we may close them. You can't sell or hand over your account.

Anyone who can read your email can log in as you, so keep your email account safe. If you think someone else got in, tell us at orfanfemsi@gmail.com.

Blox are what you spend to build in Thumblox. They have no cash value. You can't swap them for money, sell them or move them to another account.

• On the free plan, your free blox top up to 2 once a month. They don't roll over: if you have 1 left when the month turns, you get 1 more, not 2.
• Blox from paid plans and packs don't expire. When you build, free blox are used first.
• Every action shows its cost in blox before you press it.
• If a build fails on our side, its blox come back to your balance automatically.

Prices on the Pricing page are in US dollars and include VAT where it applies. Stripe handles every payment, so we never see your card. Paid plans and packs are for people 18 or older, or with a parent's permission. You get a receipt by email.

A plan renews every month or every year until you cancel it. Change or cancel it any time from your Account page (Manage billing). A canceled plan runs to the end of the period you paid for; we don't refund the rest of that period. Deleting your account cancels your plan at once.

You have 14 days to change your mind about a plan or a pack (the right of withdrawal). Blox are digital and land in your account right away, so before you pay we ask you to start at once and to confirm that the right ends as soon as you use any blox after buying. Until you do, use withdraw from contract here within 14 days of buying and you get your money back in full. It's at the foot of every page and under Billing in your Account, and we email you a receipt with the date and time. You can also email orfanfemsi@gmail.com. The 14 days run from your first payment for a plan; a renewal doesn't start them again.

Think you were charged by mistake? Email orfanfemsi@gmail.com and we'll sort it out.

Many people on Thumblox are teens, so everything you make here has to be safe for that age group. Don't use Thumblox to make or share:

• sexual content or nudity
• gore or graphic violence
• hate symbols, or anything that attacks people for who they are
• sexual, hateful, mocking or bullying pictures of a real person
• anything else that isn't safe for teens

Also don't try to get around our checks, flood the service, or use Thumblox to break the law or someone else's rights.

We check every prompt before any blox are spent, and a blocked prompt costs nothing. Checks can miss things, so you're still responsible for what you make and share.

You can put real people, like athletes or streamers, in your builds for your own private use. Builds that show a real person can't go on The Stack. Don't publish a realistic picture of a real person anywhere else, like in a game or on social media, without their consent. That's your responsibility, and Roblox may not accept it.

We can remove builds and pause or close accounts that break these rules. If you see a build on The Stack that breaks them, press Report under it, or tell us at orfanfemsi@gmail.com.

You can use what you make in your games, as thumbnails and icons, and in your videos. Thumblox doesn't claim ownership of the images you make.

The images come from an AI model, so someone else can get a similar image from a similar prompt. We can't promise that yours is one of a kind.

Only upload references you have the right to use, like your own avatar, your own art or screenshots of your own game.

To make and store your builds, you let us process your prompts and uploads and send them to our AI provider. We keep them in your account until you delete them or your account.

You keep whatever rights you have in your prompts, uploads and builds. You give us a free, non-exclusive, worldwide licence to store, copy, process and show them, only as far as we need to run Thumblox for you: make your builds, keep your history, check them against these rules and fix problems. The licence ends when you delete them. We don't use them to train AI models, and we only show them to other people when you share them on The Stack.

Your builds are private unless you share them. The Stack is Thumblox's public gallery: designs made by our team and builds people chose to share. Our team can see any build when we need to: to help you, fix a problem or check it against these rules.

You choose what goes on it. Share one build from its viewer, or turn on Share my builds in Settings and each new picture you build goes on The Stack when it's done. That switch is off until you turn it on. Builds made with reference images, and sounds, never go on by themselves.

A shared build shows its picture, prompt, tool and style, and how many likes and views it has. It never shows your name, your email or your references. Anyone can see it, like it and build the same idea from its prompt, and people can save the picture from their browser.

When you share a build, you also give us a free, non-exclusive, worldwide licence to show it and its prompt on The Stack and in links to it, for as long as it's shared. Take it off from its viewer, or delete it or your account, and it leaves The Stack within a few minutes. We can't take back copies other people saved while it was up.

Only share builds you're happy for everyone to see, and nothing that breaks the rules above. Anyone can report a shared build. We can take any build off The Stack; if we do, its viewer tells you why, and you can ask us to look again at orfanfemsi@gmail.com.

Every image you export carries metadata that marks it as made by AI (the IPTC digital source type “trained algorithmic media”), so it's clear how it was made.

Thumblox is an independent tool and is not affiliated with or endorsed by Roblox Corporation.

Roblox has its own rules for thumbnails and icons. When you upload Thumblox images there, they apply too.

You can delete your account any time in Settings. It stops working at once, and your profile, builds, uploads, blox and likes are removed, so builds you shared leave The Stack too. Unused blox go with it. Download your data first if you want a copy.

We can ban an account that breaks these Terms, by hand or with our extra account check (see the Privacy policy). A banned account can't build or like designs, and the app tells you why. If you think a ban is wrong, dispute it from the app and we'll answer. If a banned account is deleted, we keep a hashed copy of its email so it can't sign up again.

We can also delete an account that breaks these Terms, and a free account nobody has logged in to for 12 months, with everything in it. We never delete an account for being unused while it has a paid plan or blox you paid for.

Think we got it wrong? Email orfanfemsi@gmail.com from your account's email within 30 days and tell us what happened. We look at it again and answer within 14 days.

The Privacy policy says what stays for a while after an account is deleted.

If we change these Terms in a way that matters, we'll ask you to agree again in the app before you build. If you'd rather not, you can delete your account.

This is version 2026-10-29.

We work to keep Thumblox running and your builds safe, but we can't promise it's always available or free of errors, or that a build fits a purpose like a platform's rules. Check your builds before you use them.

We aren't responsible for indirect losses, like lost earnings or players, or for what you do with your builds. If we're responsible for a loss, our total liability is capped at what you paid us in the 12 months before it happened.

None of this limits our liability for intent or gross negligence, or the rights you have as a consumer that the law doesn't let us limit.

Danish law applies to these Terms. If you're a consumer living in another country, you also keep the protection of the rules there that can't be set aside by agreement.

If something goes wrong, email orfanfemsi@gmail.com first and we'll try to sort it out. If we can't, you can complain to the Danish consumer complaints board through forbrug.dk (Nævnenes Hus, Toldboden 2, 8800 Viborg). If you live in another EU country, the European Consumer Centre Denmark (forbrugereuropa.dk) can help.

Disputes go to the Danish courts. As a consumer, you can also take a case to the courts where you live.

Thumblox is run by Femsi Media, Gammelgårds Alle 17, 3. 37, 2665 Vallensbæk Strand, Denmark (CVR 46081269). For questions about these Terms, email orfanfemsi@gmail.com. For everything else, try Help.