Silk Worm (bootleg, set 1)

The game puts you in command of a helicopter whose mission is to defeat waves of enemies before facing one of two recurring bosses who alternate at the end of each stage.

Enemies arrive on the screen, mostly from the right, and you destroy them. There is no variation in the flow of the levels: the scenery is never an obstacle, the scrolling does not change and the opponents are always more or less the same.

The main interest of the game is the two player game. The second player has a jeep. The second player has a jeep, which is on the ground, so he or she will have to play differently from the first player, and the opponents are literally dozens of them, so the whole point of the multiplayer game will be to work out strategies to make the most of the strengths and weaknesses of each unit.