A native of rural Hertfordshire, Chalk began playing wargames at the age of fifteen.
Chalk is perhaps best known for his contributions to the Lone Wolf series of gamebooks written by Joe Dever.
[1][2] In addition to Lone Wolf, Gary has been involved in the artwork for a number of other notable games and books.
These include the board game Talisman, and the first six volumes of the Redwall series of children's books.
He is also illustrating with original artworks the French edition of Mongoose Publishing's Lone Wolf RPG.