Hide & Seek World is described as 'Online multiplayer game where you “hide” somewhere in the world, and the other players have to guess where you are based on street view images'. There are four games similar to Hide & Seek World for a variety of platforms, including Online / Web-based, Self-Hosted solutions, SaaS, Android and iPad. The best alternative is GeoGuessr, which is free. Other Hide & Seek World like games are Geotastic (Free), City Guesser (Free) and GeoGuess (Free, Open Source).
Geoguess is a free OpenSource game with Google Map StreetView inspired by GeoGuessr. When you start a round, you are teleport to a random position on Google Street View. Move and observe the vicinity. Try to guess where you are.