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Super retro game!

ブラウザの端末内でファイルを変換するサイト

This is a Reversi app that you can easily play in a web browser. You can play online matches with friends, and it also features a CPU battle mode where you can enjoy playing alone at your own pace.

This is a fresh take on traditional shogi—a 4×5 board game with a unique twist. Before the match begins, you draft the pieces you'll use and build your own formation before the game starts. Each match takes about 3 minutes, so you can enjoy quick games in your spare time.

Visualize the in-game time, what time is it now?

Tap to jump, cliff running game.

オフラインで遊べる暇つぶしゲームです。

射撃ゲーム。以外特にいうことなし!

Fly through the neon horizon.

FormatArc is a lightweight site that processes JSON formatting, YAML conversion, and CSV conversion only within the browser. Input data is not sent to the server, and formatting and conversion can be completed on the spot.

🥁 Tap and Get Happy! A Godly Drum Machine That Sessions with Your Favorite Songs! A super stylish web app where you can enjoy authentic drum performances just by tapping your PC keyboard (A, S, D, F)!

ランダムで適当な退職理由を作れます

Just a circuit simulator. You can make calculators, games, anything.

Merge + Tower Defense Browser Game Made with Godot 4. A game where you drag and drop animal units, merge units of the same level to strengthen them, and defend your tower from enemy waves. Start with small chicks and evolve all the way to dragons through merging. Enemies include goblins, skeletons, berserkers, and more. Compatible with both PC and mobile browsers. Free and no installation required: https://www.crazygames.com/game/drop-defense Solo developed. Some sprites created using AI image generation tools. Feedback welcome!

昔なつかしいインベーダーに似たアーケードゲーム。 アイテムでパワーアップ。

I created a website where you can type FORTRAN-style language into IBM 029 punch cards on your browser and run it! As you type, holes open one by one in the card, and when you submit the deck, the results are printed on an IBM 1403 line printer.

開発者向けの様々な細かいツールを集めたwebサイトです。

無料で遊べるブラウザゲーム集。基本プレイに登録は不要。

Late Edo Period Clicker-Style Browser Game "Edo Online" Launches June 5th! Experience the era when Yoshida Shoin and Takasugi Shinsaku lived, in your browser 🥷 A commitment-style casual RPG where you click mindlessly and grow infinitely stronger.

NCS style right now

Deliver technical books introduced on Qiita via email every Monday

NGワードゲームや、人狼などで禁句縛りをするときなどに使うアプリです。

カードを振り分けるだけで、次に遊びたいゲームに出会える

A game site where you can play anywhere!
A browser port of "GunZ: The Duel," an online TPS exclusive to Windows released in 2003.
Ranked 1st on a Korean technology sharing site. Ranked 2nd on Japan's technology sharing site Qiita.
Porting a commercial game from 20 years ago to a browser with Claude Code with almost no rewriting of the original code
https://qiita.com/LostMyCode/items/7597edb999821efd2d8b
By making almost no changes to the existing source code and having AI handle 99% of the newly required implementations, what would normally be an overwhelming task requiring years of development was realized in just about 3 weeks.
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Discord コミュニティも気軽にご参加ください。 https://discord.gg/ABG8JxuBQm
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