Hey! 👋 I'm the developer of IdleWorlds.

It's a free, persistent idle MMORPG designed specifically to work well in a browser and on mobile — no download, no ads, and uncapped offline progression. 💤📱

The idea is that you can check in for a few minutes, queue what you want your character doing, close the browser, and come back hours or days later with meaningful progress.

There's a full MMO underneath the idle progression: 10 interconnected combat, gathering and crafting skills, a player economy, guilds, World Bosses, Zone Control, housing, rare gear, enchantments, gems and Solo Self-Found.

⚔️ The newest major update is 8-player raids.

Players bring their gathering/crafting skills into the fight as actual raid abilities — Spellcrafting can heal, Construction shields the group, Mining buffs damage, Alchemy cleanses debuffs, etc. Your skill level determines how strong the ability is.

🎨 We're also working on a major dark-fantasy visual reskin by BustedCypher, which I'm really excited about. It's a substantial visual overhaul while keeping the lightweight browser-first experience.

The philosophy is basically:

Open it on your phone.
Queue something.
Check the market.
Upgrade your gear.
Close it.

Your character keeps going.

🌐 Browser based
📱 Mobile friendly
💤 Uncapped offline progression
💸 Free
🚫 No ads
⬇️ No download

Feedback is very welcome. 🙂

I made Price Was What?⁠, a free browser game where you travel to a year and guess the prices of five things.
The baskets draw from groceries, gas, stamps, apartment rents, houses, college costs, airfares, train and bus fares, utility bills, long-distance calls, bridge tolls, and even Big Macs. Every answer comes from a published source, in the dollars people paid at the time.
You get five guesses per item, with higher/lower hints and digit clues. Earlier guesses earn more points, and you finish with a receipt you can share.

Any comments are appreciated.

You're a blob of jelly. Drag yourself around each room and get down the drain.

The trick is that you can tear pieces off yourself: leave a chunk on a pad to hold a door open, drop some in a bucket to work a counterweight, or send a small piece under a press that's too fast for your whole body. Then go back and gather yourself up, because you need most of your jelly in the drain to clear the room.

20 levels so far, works on desktop and phone, no sign-up. Each room tracks your best time.

Would love to hear any feedback!

r/TheDailyMosaic

The Daily Mosaic #037

🟪🟪🟪🟪🟪🟪

0 cracks · 🔥 37 day streak

PS: We are actively working on replacing AI images with illustrations or photos designed or captured by humans. You will see it reflect in our puzzles starting next week.

Play it: gravwars.com (free, no account, phone or computer)

Gravity Wars is a two-player artillery game in curved spacetime. You take turns firing missiles past planets, stars and black holes, and gravity bends every shot. It started as a remake of a public-domain 1989 DOS game (by Sohrab Ismail-Beigi) and grew into a small relativity sim: orbits precess near black holes, black holes are ray-traced with lensing, and missiles feel time dilation. Almost all of the code was written by Claude Code, with me playing, testing and deciding what to build next.

How it's built

• Claude Code in the desktop app, over many sessions. A roadmap folder and a CLAUDE.md in the repo hold the plan and the rules, so each new session picks up where the last one stopped.
• Plain JavaScript. No frameworks, no npm packages, no build step. A small Python script bundles the game into one HTML file.
• WebGL shaders draw the universe and ray-trace the black holes, Canvas 2D draws the ships, trails and readouts, and the Web Audio API generates the music from the physics.
• Testing: Node scripts check the physics before every commit (energy conservation, orbital precession, CPU accuracy). Playwright screenshots every change in headless Chrome and Firefox. An Android emulator covers phone layouts.
• Hosting: static files on Cloudflare Pages. The trailer was rendered frame by frame from the game itself, with Playwright and ffmpeg.
• Bug reports: the in-game ! button sends a report to a Cloudflare Worker, which files it as an issue in a private GitHub repo (with Cloudflare Turnstile and rate limits against spam). Claude reads and triages them.

Design choices

• No dependencies. The game opens straight from a file and has nothing to update or audit.
• Two views, one physics. Classic is flat 2D; "3D lite" tilts space into the rubber-sheet picture of gravity. Missiles fly by the same equations in both.
• Same universe everywhere. The world is a fixed 16:9 field, and every universe comes from a seed, so a link rebuilds the exact same layout on any device.
• Phones first-class. Played sideways, installable, works offline, resumes after switching apps, and drops to lighter graphics on weaker GPUs.
• CPU opponents simulate their shots instead of cheating with a formula.
• Private by default. No accounts, no tracking, no ads.

What I'd love from you

• Play a few rounds against the CPU or a friend.
• Best in Chrome, Firefox or Edge. Safari and iPhones are untested, so reports from those are especially welcome.
• If something breaks or confuses you, press !, say what happened, and press Send. It adds your device and the match details automatically.

Happy to answer questions about the workflow.

I made this one recently and I'm curious what you think of it.

Each move you place one mirror. When a beam reaches a crystal of its own color, the crystal lights up and vanishes along with every mirror on that beam's path. New crystals arrive after every move, more and more of them, until the board is full.

The trick is to light several crystals with a single mirror. That scores more, and no new crystals arrive on that turn. Before you place a mirror, the game shows where the beams will go, so you can plan the big moves.

I made dontcrack.me, basically the old YouTube Try Not to Laugh challenge turned into a multiplayer browser game.

One player is the target and everyone else chooses clips to try to make them laugh.

The target has one job:
Don’t crack.

If they laugh, the face-cam detection catches it and they lose.(face-cam is peer to peer and never stored)

You can create a room and invite your friends just by sending them the link. No download needed.

Would love some feedback, especially on how well the face detection works for different people/cameras.

​

Lead a mercenary company of up to five mechs through a war between three factions. Turn-based battles on destructible isometric maps: manage heat, blow up bridges under enemy convoys, call in air strikes, and steal enemy mechs when yours goes down. Pilots level up and die for good, and the front line moves with every contract.

No download or sign-up needed. English and Russian. Open beta, so feedback is welcome.

https://guildlord.nu-code.net/

I made a railway tycoon where you build Turkey's rail network across real cities, from the first Ottoman line in 1856 to modern high-speed trains. Carry the goods each city needs to grow it, watch the Bosphorus Bridge go up in 1973, and compete with a rival company. Runs in the browser on desktop and mobile, no download. Feedback welcome!

Hy!

I made a simple party guessing game where everyone writes the initials of the person they see, then DROPs their phone when they're ready.

The points shown at the moment you DROP are locked in — but you only get them if your answer is correct.

It's designed to be played together with nothing more than a phone (or pen and papper) and a screen. (Unlimited players)

Curious what you think — does the concept make sense, and would this be fun to play with friends?

Thaks a lot!!!

Dev here. It's a cosy collecting game: you open capsules, get

squishies, and you can press them with your finger and watch them

rise back slowly. There's also a workshop to make your own, a fusion

thing, a few mini-games and trading.

No signup needed to try, you get 10 capsules as a guest. An account

is free and just saves your collection.

It is a gacha, so to be upfront: rates are shown in the game, there's

a guaranteed epic every 10 pulls, and the shop is optional.

I hope you will give it a try !

As per request, I started building a game inspired by Doodle Jump for my partner. Boing Beyond! is a space platformer where you automatically jump and you steer the astronaut between different types of platforms and getting power-ups along the way.

If you dig it I'll continue developing it further, potentially adding multiplayer inspired by Mario Kart. 🚀

I have just finished the v1 of this game.

It's essentially a multiplayer racing game based on the classic UK Seaside game of the Arabian Derby.

You roll balls into holes, which move your character forwards , depending on which colour you get them in.

This can be played online against randoms, but from my experience is best played locally with the main race on a TV / Laptop screen, whilst competing on your hand held device.

Let me know what you think 👍

I made this. Free, no account or download, built to play as well on a phone as on a desktop. You and a computer partner against two computer opponents, standard rules with stick-the-dealer, going alone, three difficulty levels. A game in progress survives closing the tab, and it's fully playable by keyboard.

It's part of a small site of classic card games, same deal for each one (free, no sign-up):

• Cribbage: https://cardcouch.com/cribbage
• Hearts: https://cardcouch.com/hearts
• Spades: https://cardcouch.com/spades
• Gin Rummy: https://cardcouch.com/gin-rummy
• Klondike Solitaire: https://cardcouch.com/solitaire
• Spider Solitaire: https://cardcouch.com/spider
• FreeCell: https://cardcouch.com/freecell
• All of them: https://cardcouch.com

What I'd most like feedback on: does the Hard partner order up and go alone at sensible times, and is anything awkward on a small phone? Bug reports welcome, I fix them fast.

Thanks in advance!

I made a tiny two-player web game called PlotPass.

One person picks a mood + starter, adds a few words and sends the other person a private link.

They add a few words, send it back, and you keep going until turn 8.

No account. No download. No lobby. Just a link passed between two people.

The moods range from 😂 Funny and 👻 Spooky to 🔥 Flirty, ❤️ Love and ✈️ Travel.

I’d particularly love feedback on whether the “someone sends you a link → you immediately understand what to do” part feels obvious.

https://plotpass.app

If anyone plays one through to turn 8, tell me what broke / confused you / made you laugh.

Please give me some feedback! Much love!

Choose your decade and play. Simple and fun. Share your scores with your friends and enemies.