ifeq ($(GAME_TETRIS_CORE),y)
SUBDIRS += games/tetris
endif
ifeq ($(GAME_SPACE_INVADERS),y)
SUBDIRS += games/space_invaders
ifeq ($(GAME_SNAKE),y)
SUBDIRS += games/snake
ifeq ($(GAME_BREAKOUT),y)
SUBDIRS += games/breakout