world war 3 being fought with retro + futuristic dieselpunk styled mechs, mecha,. combat robots, unreal engine 5 mechwarrior, lifelike photography, intense explosions gunfire armageddon hell on earth blitzkrieg, ww 3, by yoji shinkawa and dzo olivier and alphonse mucha victo ngai 8 k hyperrealism photo - realistic ok 8 k