Update README.md

Author: Dave-YP

README.md

@@ -3,7 +3,7 @@
 ![alt text](images/gameplay17.png "Gameplay")
 
 # Cosmic Heat
-Just a communist 2D shooter from a neighboring parallel world. It was written using Python and Pygame. The game is still being updated. To control the player, you can use either the keyboard or a joystick.
+Just a communist 2D space shooter from a neighboring parallel world. It was written using Python and Pygame. The game is still being updated. To control the player, you can use either the keyboard or a joystick.
 ## Game launch:
  - git clone https://github.com/Dave-YP/cosmic-heat-pygame.git
  - cd cosmic-heat-pygame