Stone Bricks come from harvesting the "Living Stone" objects, like these:
What Levels have those?
About 30 level in, you'll find a bunch of "Quarry" levels. These are great for finding Living Stones and Stone Bricks. Quarry 4 is the first of them have Living Stones as common rewards for completing the level. Then you can take those back to Camp and harvest them for Stone Bricks!
What Levels have those?
About 30 level in, you'll find a bunch of "Quarry" levels. These are great for finding Living Stones and Stone Bricks. Quarry 4 is the first of them have Living Stones as common rewards for completing the level. Then you can take those back to Camp and harvest them for Stone Bricks!