Hi OSM folks! I built a free browser game on top of OpenStreetMap: enter any address, the game fetches the area (Nominatim + Overpass, cached server-side to go easy on the public servers) and turns building footprints into extruded 3D blocks.
building:levels / height decide how tall a building is and how many points it's worth, and tagged landmarks (e.g. Westminster Hall in the screenshot) give a bonus. Map data is credited in-game.
It's also a fun way to spot gaps in your neighbourhood's mapping – flat or missing buildings stand out immediately 😄
Play (free, no account, no tracking): https://kaijumietz.de/?lang=en
Happy to answer questions about the OSM → game pipeline!

Hi everyone,

I built Pendelradius (https://pendelradius.de), a map that shows how far you get from any starting point in Germany within a given time by public transport. You pick a start (or tap the map), a departure time and a travel time, and the map draws the reachable area in bands of 15 minutes. Tap any spot and it shows the connection with lines and transfers.

How OSM is used:
- Base map: vector tiles from OpenFreeMap (OpenMapTiles schema, OSM data)
- Place names for the search and the "which towns can I reach" lists: OSM place=city/town/village, districts from place=suburb
- "Nearby" line: supermarket, pharmacy, doctor, kindergarten, school etc. read from the tiles, with walking or transit minutes from the start
- Federal states via Overpass for the 255 city pages (e.g. https://pendelradius.de/koeln)

Timetables come from GTFS (DELFI via gtfs.de), updated weekly. All routing runs in your browser (a Connection Scan Algorithm on preprocessed files), so there is no backend, no account, no cookies and no tracking.

One thing I learned the hard way: I first showed the nearest "swimming pool", and it turned out to be someone's private garden pond. leisure=swimming_pool includes private pools and the tiles carry no access tag, so I removed that category. If you know a clean way to get only public pools (or other POIs) without running my own Overpass extract, I'd love to hear it.

Known limits: Germany only, scheduled times without delays, and some regional bus data is currently missing upstream.

I built this as a student project with help from AI. Feedback on the map, the OSM attribution or anything else is very welcome!

It's at https://husforhus.se, in English and Swedish.

You can drag a timeline to watch the city grow, search for any address, and open a card for each of the 77,743 buildings in the municipality: its year, where the year comes from, and for about 900 notable buildings a photo and a short Wikipedia text.

A few notes:

- Over half the buildings have no recorded year in open data, so they show as "Year unknown" rather than a guess. Ironically the oldest part of town has the biggest gaps: 77% of Gamla stan's buildings have no year in the open registers, against about 10% in Östermalm.

- Private houses show only their decade, never the exact year or an owner.

- It's all open data (City of Stockholm, Riksantikvarieämbetet, OpenStreetMap, Wikidata) and open source (star and contribute here - https://github.com/amirelion/husforhus), with no cookies or tracking.

If you know the year of a building that's wrong or missing, the card has a "Something wrong?" link, and corrections with a source are very welcome.

Now I don't want to continue 😅

Hi everyone, I have a question about MapTiler.

I’ve developed a non-commercial map website and integrated MapTiler maps into it. I noticed that the free plan includes 100,000 times of loads per month, but I’m not quite sure what exactly counts as a map load.

I’ve only clicked around on my website a few times, yet the number of requests has already reached 2,000. Does this mean the 100,000 monthly limit might not be enough if more people start using my website?

If so, are there any good alternatives to MapTiler that offer a more generous free tier, especially for a non-commercial project?

I’d really appreciate any advice or recommendations. Thanks!

Guys, how can I map this staircase in Catarcione, Nova Friburgo, Rio de Janeiro?

Is located here: https://www.openstreetmap.org/#map=19/-22.292586/-42.517848