O joguinho é legal! Só acho que a colisão é meio bugada e os sons são muito estorados, e deu esse bug pra mim:
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ERROR in action number 1
of Step Event0 for object obj_control:
Unable to find instance for object index 7
at gml_Script_anon@1603@gml_Object_obj_control_Create_0
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gml_Script_anon@1603@gml_Object_obj_control_Create_0 (line -1)
gml_Script_anon@245@gml_Object_obj_control_Create_0
gml_Object_obj_control_Step_0