Rock Hopper (F) (1985) - Amstrad CPC - Platformer, Arcade.

ROCK HOPPER is an arcade/strategy game in which Freddy (you) the small yellow hopper, has entered a system of 10 caves to plunder all the treasures within. The caves are highly unsafe and you must beware of falling rocks and (in later levels) poisonous snakes. The rock will only fall if the ground below it have been digged. As you move, you dig the ground that surrounds you and must be careful not to be crushed. You can fall from any height and to finish the cave you must collect all the treasures before your time runs out. If Freddy gets stuck, you can restart the level by pressing CTRL + A (abort) and loose a life. (You start with 3 lives and get an extra 1 for every cave you complete)