The wave starts with a safe zone and a danger zone warning at the opposite top sides of the screen. The player spacecraft will be facing downwards as well.
A barrier “scoop” and a barrier “cone” will appear at the danger zone postion. The scoop will then starts filling this cone with chickens.
After the cone is filled, a “cherry” bomb will be placed on top of the ice cream cone.
After the cherry is placed, the ice cream cone will start sliding to the opposite side of the screen for a new cone to filled.
After all three cones are filled. The scoop will be taken off the screen. The final formation will be like the image below if no enemies are killled.
Idea