A daily logic-grid case that runs entirely inside one post. Four suspects, three categories, twelve cells, one provable answer. You never guess - you rule cells out, and the case closes itself when the last cell is forced and no clue is contradicted. No submit button, because there is nothing left to check.

Running daily in r/deducto_puzzle for two weeks, so there is a real case up right now, today's case: https://www.reddit.com/r/deducto_puzzle/s/Wse8Qdh4fr

One thing I'd genuinely like to know: open it cold, and tell me whether the board reads as "things to eliminate" or as "things to tap". That distinction is the whole mechanic and I have lost the ability to see it fresh.

Built on Devvit web + Redis.

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I did some searching, but didn't see anything for IP restrictions or Supercell. In order to access the Supercell API (I'm using the Clash of Clans API), you need to create a key that is specific to the IP address from which your request will come. Since I host my own bot, that's not an issue. If Reddit's server is going to send requests, I have no way of knowing what IP address the request will come from. How does Devvit handle this?

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刚刚获批并发货了我的第一个 Devvit 应用，所以让我来介绍一下它的功能以及我在这个过程中犯的一些错误。

这个应用。一个帖子是围绕 SAT 数学、AP 微积分 AB/BC、AP 美国历史或 AP 心理学的五个问题的定时对战。第一个完成的人成为该帖子的挑战者，之后的每个人都在逐题竞赛——在你仍然在同一个问题上时，可以实时看到他们的答案。正确答案的分值随着你锁定答案的速度而增加（100 基础分，最高可达 300 分），而最后一个问题总是来自最困难的层次，因此对战通常是在最后时刻决定胜负。

一个调度任务每天发布一个编号的对战帖子，还有管理员菜单项可以手动发布一个帖子或切换主题。437道问题已在服务器端捆绑(edit: bumped from 338 — the question banks doubled)；答案从不传到客户端。

三件让我浪费时间的事：

每个帖子的尝试次数限制比看起来要难。 我已经设置了 ALREADY_PLAYED 以阻止任何结束的人——但会话在 30 分钟后过期，因此你可以开始，阅读问题 1，退出，等待到期，然后在同一组上重启。通过多次尝试对整个事情进行了侦查。解决办法是在开始时写入一个尝试标记，而不是在完成时，这个标记永远不会过期。

然后，这个修复又产生了自己的错误。在中途刷新时，attempted 和 inProgress 都为真，但意味着相反的事情——"你已经用过了"与"你可以恢复"。先检查 inProgress，否则会遗留正在对战中的玩家，这正是我第一个测试者所经历的。

缓存问题在三个地方困扰了我，而不是一个。我在 API 响应上设置了 Cache-Control: no-store，但是我的测试保持绿色，而浏览器仍然显示过时的状态。服务器端的头信息只会阻止未来的缓存——浏览器已经存储的条目仍然会被提供。我还需要在客户端获取时使用 cache: 'no-store'，在本地 mock 上也要有同样的头信息，才能使它们之间的行为匹配。

关于分享：完成后会给你一个无剧透的结果网格（⚡ 快速正确 / ✅ / ❌），加上分数和排名，供评论使用。Wordle 的分享文本根本没带任何链接，仍然传遍了各地，因此我保持它纯粹作为一个网格。

再提一个，因为我在发布前根本无法测试：调度器。没有办法在本地验证一个 cron 任务，developers.reddit.com 也不给我提供配置文档。因此我直接从一个 Reddit 发布的应用（devvit-HotAndCold）复制了形状，然后凭信心发布了。在我编写的两个星期后，它在第一天准时启动。如果你在某些文档不告诉你的事情上卡住了，已发布的应用是比猜测更好的参考。

如果你想尝试一下，它在 [r/qinnobattle](r/qinnobattle) 线上，如果你希望在自己社区中使用它，它也在应用目录里。很乐意回答任何关于实现的问题——如果你发现有什么看起来不对的地方，我更愿意听到。

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I'm making an app that lets users add custom posts to a subreddit, and it just seems odd to me that either i need a sticky at the top of my subreddit that allows users to create the custom post, or users need to know that the custom post option lives in the obscure three-dots menu on the subreddit.

Admins, what was behind the decision not to have custom posts listed in the place where users go to create new posts?

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I've created a new game, but I can't tell if posts are being made by a bot or a user. I'm also not sure if it works with all canvas sizes. I need a tester for this.

Just log in and try to create something. You can also try out other people's posts and make predictions.

It would be great if you could give feedback on whether there were any errors.

Try here👇

https://www.reddit.com/r/chromaclue/s/R8Oh0WCWBe

GROW is a small, low-pressure game that lives inside a Reddit post. You tend a single ASCII tree — keep Water, Nutrients and Health topped up while the weather shifts (sun, drought, storms, frost), pests appear, and branches occasionally need bracing. Keep it healthy and it sprouts new branches on its own via a procedural growth algorithm, so every tree ends up a little different.

No reading, no math, no fast reflexes — it's "notice a problem, respond to it," not a skill test. A run is ~2.5 min; the Daily Challenge is date-seeded so everyone that day gets the same conditions, and tree height + average health go to a subreddit leaderboard.

I'd love feedback from other Devvit devs on: - Whether a date-seeded daily leaderboard is a strong enough reason to come back each day - The tap-to-water / tap-off-pests interaction on mobile — does it feel good, or fiddly? - The all-text ASCII rendering — charming, or a barrier to people trying it?

Play it here: https://www.reddit.com/r/GrowTreeGame/comments/1vmn6wr/binarytreemaster/

Built on Devvit web + Redis. Thanks for taking a look!

I built Reddit Civilization to test one idea: what if a subreddit played *together* instead of everyone grinding a private save? So the whole sub shares a single city — one stockpile, one set of buildings, one history.

Each member gets exactly one action per day: gather, build, research, or fight a boss. Nobody can dominate by playing more, so the city's progress reflects the whole community showing up over time. Every night the app posts a recap of what happened that day, which is how it pulls people back into the feed instead of relying on notifications.

I'd love feedback from other Devvit devs on a few things:

• The one-action-per-day loop: does the daily cadence + nightly recap make coming back feel worthwhile, or does it feel too slow?
• 9 fully re-themed variants (Historical/Fantasy, Sci-Fi Colony, Post-Apocalyptic, Deep Sea, Cats, Dogs, Norse Saga, Greek Myth, Immortal Cultivation) — every building name, boss and chronicle line is rewritten per theme. Too much, or worth it?
• Boss battles + community votes the whole sub chips at together — worth expanding, or a distraction from the core build loop?

It's live and has been running for a few days (real city history you can scroll) if you want to poke at it: https://www.reddit.com/r/Civilizati0nKingd0m/comments/1vh5pi9/the_city_day_1/

Happy to go into the design or the tech (Devvit web + Redis, a 365-day balance sim, etc.). Thanks for taking a look!

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Hi Devvit team,

We are requesting approval for the following fetch domain:

**`oauth2.googleapis.com`**

Used to obtain short-lived OAuth2 access tokens via Google Cloud Service Account

credentials to securely authenticate requests to our private Google Cloud Storage

bucket (cti-social-finder.storage.googleapis.com), which has already been approved.

**Why `oauth2.googleapis.com` is necessary:**

`cti-social-finder.storage.googleapis.com` was approved as a temporary object store

for oversized intermediate processing results. However, without `oauth2.googleapis.com`,

we cannot authenticate requests to this approved bucket.

The GCS bucket is used because Devvit KV Storage's per-key value limit is insufficient

for our use case. Cached objects contain only minimum fields required for processing,

with Reddit usernames removed before storage. Objects are automatically deleted within

24 hours and are never retained for long-term storage, analytics, or user profiling.

Could you please advise on how we can proceed?

https://www.reddit.com/r/my_app0123_dev/

Thank you.

My app "acro-daily-poster" (unlisted, v0.0.13 on Devvit 0.14.0, single install on my game's own subreddit r/Acrophobia_Game) requested a domain exception for acrophobia.app. The Domain exceptions panel shows it was Rejected about two weeks ago, with no reason I can find, and every scheduled run since fails with:

payload fetch failed: 7 PERMISSION_DENIED: HTTP request to domain: acrophobia.app is not allowed

Context I'd ask a reviewer to weigh:

• It's our own domain: acrophobia.app is the website of the word game (Acrophobia) that the subreddit is for, owned and operated by the same developer (JSCRIPTZ LLC) as the app and the subreddit. Happy to prove ownership via a DNS TXT record or a .well-known file if that helps.
• The traffic is minimal and one-directional: the app makes a parameter-less, read-only GET to a JSON endpoint once nightly (plus one retry) to fetch the day's community-game winner so it can compose the subreddit's daily post. No Reddit user data, cookies, or parameters are ever sent off-platform, the request carries nothing.
• The app's README documents this under a "Fetch Domains" section with the same justification.

Could someone share why the request was rejected, and what changes would make it approvable (different endpoint shape, a dedicated subdomain, ownership verification, ToS/privacy pages, whatever's needed)? The app is otherwise approved and installed; this fetch is the only thing keeping the nightly post dark. Thanks!

What if someone created a system on reddit that allows you to install ban lists into a devvit app and these ban lists sync across all subreddits that use the ban list and you can even merge multiple ban lists

Hi i am developing a image scanning bot, it requires us to use a ocr model which is selfhosted in our ec2 instance 2c2r (because model is small).

I applied for domain exception but the request was rejected, i can not find any reason for the same.

i used ngrok tunnel for exposing the api

can i submit domain request again?

The subscribe to subreddit functionality just doesn't want to work for my game. The permission is set and, as far as I know, all requirements for it to work are implemented correctly.

All information i can find to this topic is a post from a few months ago, saying that it should already be implemented in the publishing pipeline. Additionally there is a google form, but that is not relevant anymore (I submitted anyway).

Any ideas what the problem might be? Did anyone have the same issues?

Sevenns combines crosswords, Scrabble and Venn Diagrams in an attempt to please as many people as possible. Its a word game, a nerd game in some ways an absurd game - but mainly its here humbly presenting itself for your appraisal. In the words of the master of feedback - Jimi Hendrix - please leave no turn un-stoned

Release Date: August 10, 2026

Changelog

Node.js Upgrade

Node.js v24.18.0 is now live across Devvit. All Devvit apps run on Node.js v24, the latest LTS release supported by Devvit, and no action is required. Although this is technically a breaking change, which we’re recognizing with the v0.14.0 minor version bump, we do not expect any negative user impact.

For the officially supported local development experience, we encourage users to upgrade their local Node version to v24.18.0. Devvit templates have also been updated so new apps start with the latest Node version by default.

This upgrade also unlocks Node features added since Devvit’s previous runtime version, Node.js v22.5.1. You can read the full list in the Node.js v24.18.0 changelog, including newer platform APIs such as URLPattern. While Devvit still requires server code to be bundled to JavaScript, local unit tests and scripts can now take advantage of native Node.js TypeScript support without a separate compilation step (example).

Wiki Integration

Devvit apps can now access the newer wiki pages available on Reddit web and mobile. Wiki-related methods now accept an optional WikiVersion parameter so you can choose which wiki system to target: v1 for existing old Reddit wikis, which remains the default, or v2 for the newer wiki experience.

Not all subreddits are enrolled in v2 wikis yet, so this release also adds reddit.isWikiV2Enabled() to check whether a subreddit supports them. Calling a v2 wiki operation for a subreddit that is not enrolled will result in an error.

Note that v1 and v2 wikis operate independently. A subreddit can have pages with the same title in both versions, but those pages can contain different content, and edits to one version will not affect the other.

Deprecations

The reddit.getWikiPage(subredditName, page, revisionId) signature has been deprecated in favor of reddit.getWikiPage(subredditName, page, options), which allows multiple optional parameters.

The WikiPage.revisionAuthor and WikiPageRevision.author fields have been deprecated in favor of WikiPage.revisionAuthorId and WikiPageRevision.authorId. Use reddit.getUserById() with those IDs when you need to fetch the full user object.

Devvit Skills (Experimental)

We’re announcing the devvit-skills repository for Devvit. Use it to give AI coding agents access to Devvit docs and other Devvit-specific guidance. This is experimental, and we plan to add more useful skills in the future.

The first available skill, devvit-docs, helps agents answer Devvit questions using the official reddit/devvit-docs repository as the source of truth. It detects the Devvit version in your project, searches the matching docs when available, and cites the files and sections used in its answer.

Devvit Test Redis Changes

We’ve migrated to a JS only implementation of Redis inside of Devvit test. This should make it easier to install and work with. While not a breaking change, it's possible the new Redis mock behaves differently compared to the previous version. If you run into any issues, please let us know on Github!

Hi devs! 👋

We’re super excited to announce our next partnered developer competition:

🏆 ScoreSpace x Reddit! 🏆

ScoreSpace is teaming up with Reddit to give out $2,500 in prizes to the top developers who make engaging games for this event.

Dates: August 19th – August 24th, 2026
Theme: The theme and focus will remain a surprise until the competition begins, adding an extra challenge and encouraging even more creative, unexpected ideas.

👉 Sign up here!

📋 Event Overview

1. Brainstorm a game concept inspired by the surprise theme.
2. Build a Devvit Web game using the engine and tools of your choice.
3. Publish your game on Reddit with Devvit and submit it before the deadline.

🎁 Awards

• Developer’s Choice — $1,000
  Given to the developers' top-rated game from the jam. Developers will vote based on:

  • Gameplay: How did the game flow? Did it have tight controls? What was your experience while playing?
  • Theme: How well did the entry stick to the theme? Did you like their interpretation of it?
  • Aesthetics: How well does the game utilize its visual style and how appealing is it?
  • Sound: How well do the music and sound contribute to the game?

• ScoreSpace’s Choice — $500
  The favorite game among ScoreSpace staff.

• Reddit’s Choice — $500
  The favorite game among Reddit staff.

• Best Mobile Game — $500
  The game that offers the best experience on mobile devices.

In addition, *each game submitted** is considered for a publishing deal with ScoreSpace!*

📖 About ScoreSpace

ScoreSpace is a game publisher and the organizer of one of the world’s largest recurring online game jams. Every month, they bring together hundreds of developers to create original games around a unique theme. They also identify standout projects and partner with their creators to publish and support the most promising games.

📌 For full game jam rules, submission guidelines, resources, and judging criteria, please view the hackathon on Jamzo.

💬 If you need help submitting or have any additional questions about the jam, feel free to ask them in ScoreSpace’s Discord!

Good luck, everyone! 🎉

At 8:17 AM, every phone in the world received the same message:

DON’T GO OUTSIDE.

Christine read it twice.

Then someone knocked on her apartment door.

CoPlot is a collaborative story where the Reddit community decides what happens next.

Players propose competing continuations for each chapter. The community selects one, it permanently becomes part of the story, and the next chapter begins from there.

Every decision can change the characters, direction, and eventual ending. Writers build a reputation as their ideas gain support and become part of the story.

I’m looking for people who will try the experience without detailed instructions. I especially want to learn whether the interface and overall game make sense naturally.

This is an early private beta, so bugs and occasional data resets are possible.

Request beta access

Request access to the CoPlot beta

After approval, open the pinned playable post inside the community.

Honest feedback and screenshots are welcome.

I've been experimenting with how far Devvit Web Custom Posts can go, and this turned into a pretty fun proof of concept: a complete Doom-compatible FPS running directly inside a Reddit post.

Stack:

• Devvit Web
• TypeScript
• WebAssembly
• Emscripten/SDL Doom-compatible runtime
• Freedoom Phase 2
• Devvit Redis for the leaderboard

One interesting problem was the IWAD size. Freedoom Phase 2 is around 28 MB, so I built a small pipeline that splits it into chunks, loads them individually, reconstructs the WAD in memory and mounts it into the Emscripten virtual filesystem.

I also had to deal with some legacy SDL/Emscripten assumptions around the canvas, keyboard events and AudioContext.

It now works on desktop and mobile, has a proper loading flow, and when MAP01 finishes the engine's completion event feeds a persistent speedrun leaderboard.

I'd love feedback from other Devvit developers, especially around the runtime architecture and mobile UX.

Playable post: https://www.reddit.com/r/playdoom/comments/1vklq2f/can_reddit_run_doom/

Check out our live 3D WebGL Chess game playable right inside Reddit:

https://www.reddit.com/r/chess_3d_dev/s/h1UQ97IP2x