Bom jogo, gostei bastante da ideia :)
Deu esse bug quando eu morri caindo pra fora de uma plataforma:
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ERROR in
action number 1
of Step Event2
for object obj_rip_break:
Variable obj_rip_break.velv(100097, -2147483648) not set before reading it.
at gml_Object_obj_rip_break_Step_2
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gml_Object_obj_rip_break_Step_2 (line -1)