Games was trying to sell most of his works in the 1930's and he was continually told that it was "too modern", so hats off to London Transport who commissioned his first commercial poster - A Train every 90 seconds - and yes, he was well aware of the irony!
His school report said that he was "Lazy, careless & untidy and drawing was weak", fortunately he saw this as a challenge rather than a put down. However, he never really got on with formal artistic training and only spent two terms at Central St Martins College before dropping out.
He owed a lot of his success to travelling on the top of double decker buses in London and said he should have paid rent to London Transport. From the top of buses he got a great sense for how posters were seen by a lot of travellers. Fleeting glances from strange angles, so the message had to get across quickly. His motto was "Maximum Meaning, Minimum Means", and he used limited colours & limted typography but to striking effect.
He left his students at the Royal Academy of Art with three C's that they should apply to their work. Curiosity, Courage and Concentration. Sound advice for most work actually.