Interlocking building block system

An interlocking building block system comprising:

• a first building block comprises a first recess on a first building block face;
• a second building block comprises a second recess on a second building block face;
• and
• an elongated connector configured to connect the first building block and the second building block, wherein:
• the elongated connector comprises a first portion and a second portion connected to each other,
• the first portion is configured to be inserted in the first recess,
• the second portion is configured to be inserted in the second recess,
• each of the first portion and the second portion comprises a proximal end and a distal end,
• a proximal end width is greater than a distal end width,
• the first portion and the second portion are configured to be inserted into the first recess and the second recess via respective distal ends,
• each of the first portion and the second portion comprises an elongated wall and side walls, and
• the elongated wall comprises an elongated ridge at an elongated wall center portion disposed along an elongated wall length.

An interlocking building block system comprising:

• a first building block comprises a first recess on a first building block face;
• a second building block comprises a second recess on a second building block face;
• and
• an elongated connector configured to connect the first building block and the second building block, wherein:
• the elongated connector comprises a first portion and a second portion connected to each other,
• the first portion is configured to be inserted in the first recess,
• the second portion is configured to be inserted in the second recess,
• each of the first portion and the second portion comprises an elongated wall and side walls, and wherein the elongated wall is shaped as an elongated arc.