Stand-alone game A child met a monster when he was traveling. What is the name of the tank game?

Heavy machine soldiers. According to the query game network display.

1 tells the story of a child who left home to take risks and found a tank in a cave to take risks.

2. "Heavy Machine Warrior" series is the representative work of MASIYA Group, a subsidiary of NCS, a famous Japanese game company. This is a 2D horizontal action clearance game.