Games are inconsequential. Fun and thought provoking at times, yes, but basically a luxury. If I had to lose any sense, I'd lose sight because:
Taste is important in detecting diseased and poisoned food;
Smell is important for detecting dangers such as fires and gas leaks, as well as playing a major part in taste;
Hearing allows me to navigate well enough, as well as hearing incoming obstacles and perils;
Touch allows me to, again, navigate my way around, as well as avoid hot, cold or other potentially dangerous aspects of the environment.
Sight is useful, but it does nothing the other four in tandem cannot do and sometimes sells us short. Thus, I'd lose sight.