This asset is PNG image using only 4 colors (sepia color).
Including various pixel art
(bullet,item,effect,etc).
This pixel art was created for low resolution retro type 2D shooter (vertical scrolling type).
Reference player machine size is 16x16 pixels.

This asset contains following pixel art

-player machine (1type)
-player bullet (over 25 types)
-item carrier (3 types)
-option unit (4 types)
-trace of destuction (16x16pixels
4types,32x32pixels 4 types)
-enemy bullet (over 30 types)
-homing missile (3 types)
-power up item (4 types)
-weapon change item (4+7 types)
-bomb item,shield item,option item,speed up item (each 1type)
-score up item (6 types)
-smoke and fire effect (white smoke 1,black smoke 1,fire 4)
-explosion (8x8pixels 1type,16x16 pixels 9 types,32x32 pixels 2 types,48x48pixels 1type) -hit effect (5types)
-shield effect (1type)