Every sport has a barrier to entry. Football needs eleven players, a field, and equipment. Tennis needs a racket, balls, a court, and a willing opponent. Swimming needs a pool. Basketball needs a ball and a hoop and enough clear space to run. Rock Paper Scissors needs two people and approximately one square foot of shared space. That's it. No equipment, no venue, no fees, no minimum age, no fitness requirement, no language requirement. Two people, three gestures, a count to three.
This is not a trivial advantage. Most sports are genuinely inaccessible to large portions of the global population, not because of interest but because of infrastructure. A rural school with no gym can still run a Rock Paper Scissors tournament. An office break room can run a legitimate bracket during lunch. A hospital waiting room can seat two people in chairs across from each other and have a sanctioned match. The game goes wherever humans can be in the same room, which is everywhere.
The competitive depth is real and frequently underestimated. The 2014 Zhejiang University study established that human players are not random, which means the game has an exploitable skill layer that rewards preparation and study. Pattern recognition, gambit development, cadence control, physical tell suppression, psychological management under pressure — all of these are skills that improve with deliberate practice and that produce better outcomes in competition. The Nash Equilibrium tells you what perfect play looks like in theory. Getting there in practice is the sport.
The speed is a feature, not a limitation. A match resolves in seconds. A full tournament runs in hours. The condensed stakes — everything on the line in a single throw — create a specific kind of pressure that larger, longer sports dilute across quarters and innings and sets. Competitive RPS is genuinely intense in a way that's hard to explain to people who haven't felt a tournament match come down to one throw with an audience watching.
The fairness is structural and absolute. No throw is stronger. Both players have identical options. The rules prevent timing advantages. A physically small person has no disadvantage against a large one. An older player has no disadvantage against a younger one. The playing field is as level as a competitive game can get while still being a game.
The only argument against it being the best sport is that it's too simple. Which is the same argument people make about chess, about sprinting, about any sport that strips away complexity in order to test a specific and demanding capability with perfect clarity. Simplicity in design and depth in competition are not opposites. RPS proves that.