To get puzzle pieces on War Robots, you can use the Components System, introduced in Update 3.2. Collect components to assemble robots and weapons, which you can obtain from the black market or purchase from the bank.
Another effective method is through Workshop 2.0. Here, you spend silver to acquire components. Once you gather 10,000 components of an item, you can buy it.
Participating in special events and operations is also a great way to earn puzzle pieces. These events often provide various rewards, including the pieces you need.
Grinding specific game modes or activities can help you farm equipment and puzzle pieces efficiently. Using the workshop to grind puzzle pieces is a common strategy among players.
Lastly, you can find puzzle components in chests. Some players have expressed dissatisfaction with this method, but it remains an option.
By combining these methods, you can effectively collect puzzle pieces and build new robots and weapons in War Robots.