Scuttle

Decades ago, Space Invaders thought they could get away with invading Earth. We showed them the error of their ways but recently, media outlets have reported killer crabs and poisonous seagulls demonstrating similar attack formations on local beaches. 

Are you going to let them ruin your beach vacation? I didn't think so.  Let's go...

[NOTE: This is a work-in-progress that I may return to later. There may be bugs but mostly it should work ok. There is only 1 level and it is based on Space Invaders.]