Physics makes Castle Story work with drag and drop controls. I find the touch mechanics neat but the physics mess up moves, making it relaxing for quick play.
Step, drag and drop pieces to swap them, but the physics can mess up your moves.
Controls are drag and drop and touch mechanics, which are easy to pick up. The interface feels wonky and animations are slow, which is a stated feature of the game.
Most players should focus on the drag and drop mechanic first to swap pieces. Relax and do not rush when physics mess up your moves.
Q: What are the controls? A: Drag and drop and touch mechanics.
Q: What is the objective? A: Swap pieces using drag and drop.
Q: What stated features are there? A: Slow animations and a wonky interface.
Q: What is the main mechanic? A: Physics affects piece swapping.