A group of four people developed Spewer : Edmund McMillen created the art assets for the game , and Eli Piilonen was the programmer .
Spewer was developed by Edmund McMillen and Eli Piilonen and released on Newgrounds on May 4 , 2009 .
A group of four people developed Spewer : Edmund McMillen created the art assets for the game , and Eli Piilonen was the Eli Piilonen .
Spewer was developed by Edmund McMillen and Eli Piilonen and released on Newgrounds on May 4 , 2009 .