DEV Community: Essam Ullah

Doctordle: A Daily Diagnosis Game for Medical Brains

Essam Ullah — Wed, 16 Sep 2026 23:48:54 +0000

If you are a doctor, nurse, or medical student who also plays Wordle every morning — Doctordle is about to become your new ritual.

How it works

Every day there is one new case. You get a single clinical clue, and up to six guesses to name the diagnosis. Fewer guesses, better score — just like Wordle, but with your differential diagnosis skills on the line.

Why it works for medical brains

One case a day keeps it a habit, not a time sink
The clue set rotates across specialties — cardiology, infectious disease, endocrinology and more
Perfect for ward rounds small talk: "did you get today's Doctordle?"
Free to play, no signup, works in any browser

Who is it for

Medical students prepping for shelf exams, residents sharpening differentials, attendings who claim they never forget a diagnosis — and anyone who loves a daily puzzle with a stethoscope on it.

Play today's case free at doctordle.online. Diagnosis is due by midnight.

RNGdle: One Random Number a Day, Shared by Everyone on Earth

Essam Ullah — Wed, 16 Sep 2026 23:48:12 +0000

Every day at UTC midnight, the same random number is rolled for every single person on Earth. That is the simple, strange premise of RNGdle — and it is quietly addictive.

How it works

Once a day, RNGdle generates one random number. Everyone playing that day gets the same number and the same challenge: figure out how rare your roll is.

What makes it fun

Roll your daily number and see where it lands in the distribution
Collect badges for rare rolls and streaks
Compare with friends — did anyone hit a 1-in-a-million roll today?
A brand-new challenge every single day at UTC midnight

Why I built it

I wanted a daily puzzle that takes less than a minute but still gives you something to talk about at lunch. Most daily games are word-based; I thought numbers deserved their own moment.

The whole thing runs in the browser — no download, no account needed.

Try today's roll free at rngdle.io — and see if today is your lucky day!

Minecraft Armor Trim Generator: Preview Every Trim on Your Own Skin

Essam Ullah — Tue, 15 Sep 2026 13:29:23 +0000

Armor trims are one of the best ways to customize your gear in Minecraft — but with 18 smithing templates, 10 trim materials, and 4 armor pieces to mix, finding the right combination is overwhelming.

That's exactly why we built Armor Trim Generator — a free online tool that lets you preview every armor trim combination instantly, on your own Minecraft skin.

What it does

Browse all 18 smithing templates (from Sentry to Silence)
Preview each of the 10 trim materials — iron, copper, gold, emerald, diamond, and more
See the result on your actual skin before spending resources in-game
Screenshot your favorite designs to share with friends

Why it's useful

The tool runs entirely in the browser — no downloads, no installation, and nothing to sign up for. Whether you're hunting for the perfect netherite trim or just want to see what gold on leather looks like, you can test every combination in seconds.

Try it free at armortrimgenerator.com and level up your Minecraft style today!

RVZ to ISO: Convert Wii/GameCube Disc Images Online Without Dolphin

Essam Ullah — Fri, 11 Sep 2026 10:28:39 +0000

I just released a free browser-based tool for converting RVZ, CHD, and BIN disc images to ISO — no installation required.

The problem with Dolphin backups

If you have used Dolphin emulator on Nintendo Wii or GameCube, you have probably got a folder full of .rvz files. RVZ is Dolphin's preferred format because it compresses well, but it is not portable — most emulators and burning tools expect plain .iso.

The usual workaround: install Dolphin, find a command-line tool, run it. But for a quick conversion, that is overkill.

RVZ to ISO

RVZ to ISO is a free online tool that handles this entirely in your browser. Drop your .rvz (or .chd, .bin, .ciso) file in, wait a few seconds, get a standard .iso back.

Key features:

Free for files under 200 MB with no signup
Resumable uploads up to 10 GB for larger files
All processing happens in your browser — files never leave your device
Bidirectional conversion: RVZ ↔ ISO, CHD ↔ ISO, BIN ↔ ISO, CISO ↔ ISO

Common use cases:

Shrinking RVZ backups into standard ISO for use with emulators other than Dolphin
Batch-converting folders of disc images
Rescuing CHD files locked to a specific Dolphin version

The tool is open and free at https://rvztoiso.com — try it on your next backup.

How to Extract Video Frames in Your Browser at Any FPS

Essam Ullah — Tue, 08 Sep 2026 14:05:18 +0000

Extracting still images from video is useful for thumbnails, storyboards, testing, and quick visual references.

I built Video to Frames as a free browser-based tool for this workflow. You can load a video, choose the frame rate, and export JPG or PNG images without uploading footage or creating an account.

The main design goals are simple:

Run the conversion in the browser
Keep the workflow private
Support arbitrary FPS values
Make one-click frame extraction practical

If you only need a few frames from a clip, a focused tool like this can be faster than opening a full video editor.

Building a useful co-op game guide: state, puzzles, and player context

Essam Ullah — Sun, 09 Aug 2026 04:26:16 +0000

A co-op game guide is more useful when it explains decisions, not just destinations.

Players usually arrive with a concrete problem: a puzzle is unclear, a route seems blocked, a trophy did not trigger, or a friend on another platform cannot join. A good reference should help them recover from that moment without forcing them to read an entire walkthrough.

Start with state, not a wall of steps

For each puzzle or objective, I try to record the conditions that matter:

what the player should have unlocked first;
which interaction changes the world state;
what a second player needs to do;
how to recognize that the step worked;
what to check when the expected result does not appear.

This makes the guide resilient when players arrive in a different order. It also keeps a walkthrough from becoming a brittle list of directions.

Separate facts from player notes

A compact page can combine verified facts with practical notes, but the two should stay visually distinct. Facts cover controls, unlock requirements, platforms, and known rewards. Player notes cover timing, co-op coordination, alternate routes, and the small details that are easy to miss.

That separation makes updates safer. When a game patch changes a reward or a requirement, the factual section can be corrected without rewriting every tip around it.

Design for the co-op conversation

Co-op information should answer the questions players ask each other while they are playing: Who interacts first? Can we split up? Does progress carry over? Is crossplay available? What happens if one player leaves?

I am collecting these patterns in a public Big Walk player reference, with walkthrough context, puzzle notes, trophies, map unlocks, co-op, and crossplay details: Big Walk Player Guide.

The broader lesson is simple: a game guide is a small information system. If its structure mirrors the player's state and questions, it becomes easier to scan, easier to maintain, and much more helpful than a page that only lists answers.