o=obstacle,10,0,620,10
o=obstacle,0,10,10,460
o=obstacle,10,470,620,10
o=obstacle,630,10,10,460

o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=plankton,r,r
o=player,320,240

i=Eat all food pellets in a screen to advance
