Queen's Pawn Game is a chess opening with the ECO code A40. It goes 1. d4. White opens with 1. d4 (the queen's pawn). After 1 move it is Black to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
In chessGM's opening book this position continues with 1... Nf6, 1... f5, 1... d5, 1... e5, 1... d6.
White opens with 1.d4 and plays a system without an early c4. It covers many calm setups like the Colle, London and Zukertort ideas.
chessGM has a full course for this line: open the Queen's Pawn Game course lesson.