On and Off Topic

The short version

On and Off Topic (onandofftopic.com) is a one-person collection of free interactive browser toys about maps, money, elections, and cities — 16 games and a dozen data explorers, all playable or usable in seconds with no signup, no app, and no ads gate.

Facts
Site: onandofftopic.com  ·  Contact: admin@onandofftopic.com  ·  Author: one independent developer
Cost: everything free, no accounts  ·  Platform: any modern browser, desktop or mobile
Data sources: IMF, World Gold Council, UN Comtrade / tariff schedules, US press and travel records — cited on each tool

Embedding anything

Every game and tool can be embedded on your own page with an iframe. Point it at the project's URL and size it however you like:

<iframe src="https://onandofftopic.com/games/jerrys-mander/"
        width="960" height="600"
        title="Jerry's Mander: gerrymandering game"
        style="border:0;border-radius:4px"></iframe>

You may embed, screenshot, record, and quote anything on the site for editorial or educational use with attribution and a link. If you stream or post gameplay, a link back is appreciated — that's the whole ask.

Games, one line each

Jumbled JamblerDaily word puzzle: rebuild a scrambled sentence against the clock.
Jerry's ManderGerrymandering simulator: redraw real congressional maps and watch the math bend.
Soft LandingYou run the central bank: set rates, tame inflation, don't cause a recession.
CircumstancigateRace rivals around the world on a budget; every run exports as a video.
CityZoningOutCity-building sandbox: roads, zoning, transit, and a living little economy.
Set-Up the StatesColonial strategy: settle, trade, and grow from thirteen fragile colonies.
Ironing the CurtainCold War strategy game about pressure, proxies, and patience.
House Home HuntProperty-trading board game about buying the right house at the right time.
Historical RacesKart racing through history, WASD and all.
Banking Simulator 5000Run your own bank without (permanently) wrecking the economy.
Stock TrainerA stock market simulator for learning the ropes without losing real money.
Trading Beyond HistoryHistorical card game of trade, luck, and terrible diplomatic decisions.
Choose Your Own PresidencyPresidential decision game: take the desk, make the calls, live with them.
MicrocosmInteractive microeconomics lessons: drag supply and demand around yourself.
Love's EndDetective visual novel with full voice acting and music.
Random CityProcedurally generated cities from real geographic data, a new one every refresh.

Data tools, one line each

Bilateral Trade ExplorerEverything any two countries trade, product by product, with tariffs on top.
Mystery ExporterA daily puzzle: guess the country from what it exports.
Foreign Currency ReservesWho holds which currencies and gold, 165 countries, 1947 to today.
Rent ExplorerRents across 130+ US metros, compared side by side.
Metro Home Price ComparisonMedian prices plus thirty years of property tax across 20 big metros.
Mortgage LabA mortgage calculator with the what-ifs built in.
Second Largest World CitiesThe #2 city of nearly every country, mapped.
States Visited by PresidentAn atlas of every state each president has set foot in, year by year.
Top 50 Fast Food ChainsThe biggest US chains mapped by HQ, with 2024 sales and per-store economics.
Draw on GlobePaint directly on a 3D globe and export it as a flat map.
Create Your Own LanguageBuild an alphabet and dictionary for a language that doesn't exist yet.
Football World ChampionshipSimulate international tournaments, past or fantasy.

Images and links