This video from the Netherlands says about itself (translated):
Feb 3, 2014
Rotterdam 3D project started in 2010 and was designed by students of the Graphic Lyceum Rotterdam. The students depicted Rotterdam in 3D in the years 1934, 1940 and 1954, based on aerial photos and other images from the archive.
Today, a new educational computer game on the horrible destruction caused by Hitler’s bombs is available on the Internet (beta version, will be developed further). See here on the game. The game can be downloaded here.
Film on bombing of Rotterdam: here.