Trophies are optional, but very expressive, form of reward for the player and comprise various beautiful and well-crafted illustrations the player receives besides the ordinary achievement. In contradistinction to the achievements, the illustrations are displayed one by one, because they are pretty large and have a transparency background (as option). There must be a special trophy room to keep all the trophies, and its decoration may be a bit ceremonial to engage the player's special emotions.
The following screenshot shows different Trophies for the Blueprint 3D game:
18.118.2.240