Is it possible to make reflections in (UP)BGE? I'm working on a game and would like to know is it possible to make a reflective surface for stuff like mirror and high rise windows (via textures).

The image is from LEGO: Marvel Superheroes how to I add reflections like they did on the Empire State Building, but in blender?
Information
Both UPBGE 0.2x and 0.3x both have internal, real-time reflections.
You can get the exact same result in BGE but you'll need to use an external shader script.
Blend File (in a 0.2x release)
https://blend-exchange.com/b/XjnaWgkE
Screenshot (in 0.2x)