Valiant Hearts: The Great War, the critically acclaimed puzzle-adventure game, has just gone on sale for $0.69 when you factor in the Amazon Coin reward. It is on sale for $0.99 with a 30 coin reward. This matches the lowest price this game has ever been. It has received great critic reviews across the board, but has suffered from instability issues on Fire tablets, resulting in a 3 out of 5 star Amazon rating. Be aware that buying the game only unlocks the first of four chapter.