Google Analytics is a very simple to use, cross-platform (tested on win/osx/linux) and basically very tiny analytics system written in C++ (less than 150 lines of code), made specifically for games. It uses libcurl to post events to your Google Analytics account.
Call GoogleAnalytics.initialize("UA-12345678-1", uniqueId) at startup, and GoogleAnalytics.flush() each frame. You also need libcurl in your project (ssl not needed).
There's only one function to use when posting an event, e.g.
GoogleAnalytics.send_event_action("GameStart", "linux");
GoogleAnalytics.send_event_action_label("WeaponClicked", "RocketLauncher", "Loading);
GoogleAnalytics.send_event_action_label_value("MapStarted", "SinglePlayer", "MapName.map", 150);
Original authors: Mihai Dragomir - dmc@pixelshard.com Mihai Gosa (Pintea) - pintea@inthekillhouse.com or @gosamihai on twitter Initially developed for the 'Door Kickers' games.
Forked by: Xavier Sellier - contact@binogure-studio.com Enhanced for City Game Studio game
License: MIT