Spieli.eu
Spieli.eu is a free, web-based playground map that uses OpenStreetMap data and is operated as a federated system of hubs and regional data nodes. The project's goal is a privacy-friendly, easily accessible platform for finding, rating, and adding playgrounds, play equipment, and points of interest relevant to playground visitors.
The idea for Spieli originated from the desire for a user-friendly playground map based on open data. Existing offerings were partly proprietary, required user accounts, or stored media and reviews in closed systems; municipal maps were outsourced to cloud services and often incomplete. The Berlin playground map served as inspiration; its prototype met many conceptual requirements but still had limitations (no image support, no ratings, only Berlin, no POI routes).
Spieli is designed as a federated system. It distinguishes between a hub mode, which hosts the frontend and map display, and data nodes that provide OSM data for specific regions (e.g. by relations or federal states). This decentralised model enables distributed hosting, scalability, and lower central infrastructure costs.
OpenStreetMap serves as the main data source for information on playgrounds, play equipment, and relevant tags. Free image services (e.g. Panoramax) are used for image usage, and reviews and ratings are integrated via Mangrove Reviews. Thus, Spieli does not maintain its own data. Data nodes are only used as a caching and aggregation layer.