How to use the sister sites (without the jargon)

Here is a kitchen-table guide to the sister sites next to PhaseOutLimit. Skip any section that is not your thing.

Collectio · “I want a short game”

Open the hub, search or tap a category, then open a card. Read the how-to once if the controls feel new. Use favorites for games you like. Random is fine when you do not want to choose.

Scores and saves live in your browser. Same Wi‑Fi room codes exist in some board games if you play with someone nearby. No account.

Mare · “I want to read something useful”

Pick a topic you already care about, read one article end to end, then try search if you want a related note. Essays are longer opinion or method pieces. You cannot post comments — it is a reading archive on purpose.

Instrumentum · “I need a quick calculation”

Open https://phaseoutlimit-instrumentum.pages.dev/ . Pick English or Korean, open a calculator, enter numbers, then read the short explainer under the tool. Treat health, money, and legal-ish results as starting points, not final advice.

Digestum · “I need a fact table”

Open https://phaseoutlimit-digestum.pages.dev/ . Look up codes, sizes, or directories. Confirm important details on the original source.

Linguarium · “I want language notes”

Open https://phaseoutlimit-lingua.pages.dev/ . Pick a language for script and IPA, or open a reading for sentence practice. There is no visitor account.

POL on Audiomack · “I want the studio music”

Open https://audiomack.com/phaseoutlimit for albums and tracks. This hub also keeps a compact player in the corner.

Praxis Codicis · “I want to practice code”

Open https://phaseoutlimit.com/coding/ . Use Playground for free runs, Problems for short graded tasks, Preview for HTML/CSS/JS. Code stays in your browser — there is no remote judge. Progress lives in localStorage; export JSON from Progress if you want a backup.

Tetra Ars · “I want Tetris”

The website is a doorway. Play in the Redot client: practice first, then AI, then a room code with a friend. Online play needs a normal internet connection. The thin web page is not the full game.

Coin search · “I want to scan markets”

Open the table, sort by change or volume, then try Filters. Set an alert only after you understand the notification prompt. Help pages under /site/ explain privacy, terms, and how the tools work. This is not a broker — confirm prices on the exchange before you act.

Suavitas · “I want Korean letter play”

Open the site, pick wordchain (tail, head, or middle) or the vowel quiz, and type. There is no account. The dictionary and rooms live on Cloudflare.

Tactio Velox · “I want to practice typing”

Open https://phaseoutlimit-typing.pages.dev/ and start a drill, or go straight to /play/. Sentence, word, and key-position modes sit next to three short games. Records stay on this device.

Scientia · “I want science formulas”

Open https://phaseoutlimit-nst.pages.dev/ko/ (or /en/), pick a field, then a topic. You get a short explanation and the usual formulas. Treat it as a study summary — check a textbook for exams or lab work.

Contact

For any of these sites, email [email protected]. Please say which site you mean in the subject line if you can.

A light checklist

• Cleared one Collectio game
• Read one Mare article
• Used one Instrumentum calculator
• Looked up one Digestum table
• Opened one Linguarium language
• Tried one Praxis Codicis problem or playground run
• Opened Tetra practice in the client (if you play)
• Skimmed Coin’s how-it-works before trusting a filter
• Played one Suavitas round
• Typed one Tactio Velox sentence
• Opened one Scientia topic
• Opened POL on Audiomack

Done. You already know the network better than most first visits.