Dara O Briain hosts the ultimate test of collective, cross-generational intelligence. Who will overcome brain freeze and inch closer to The Family Brain Games crown?

Dara O Briain hosts as the Smith family and the Simmons family go head to head to test their cerebral mettle.

The Riley family and the Kerr family prepare to have their intellectual talents tested like never before.

In the final heat, the Mohammed family from Watford and the Smith family from Cumbria compete for the last remaining spot in the semi-finals.

Dara O Briain hosts the ultimate test of cross-generational intelligence. In semi-finals week, the six remaining families battle it out to be crowned the winner.