Bridge Builder is a free puzzle game for Android developed by Yuliya Taranava. The game's objective is to help a train cross a canyon by constructing bridges with rails. The game offers a variety of challenges, including limited resources, obstacles, and varying terrain.

To construct a bridge, players must select the right rail pieces and connect them to create a stable structure that can support the weight of the train. The game provides a limited number of rails, which can be increased by completing levels with leftover rails.

Bridge Builder is a fun and challenging game that requires strategic thinking and problem-solving skills. The game's graphics are simple but effective and the controls are easy to use. Overall, Bridge Builder is a great option for puzzle game enthusiasts looking for a new challenge.