Single-elimination Rock Paper Scissors is the purest test of throw quality the format allows. There are no second chances to adjust your read. There are no subsequent games to recover from a bad first throw. You have the current throw, and if you lose it, you're done.
This changes the psychology in a specific way. Standard best-of-three or best-of-five play allows for pattern adjustment mid-match. You can lose the first throw, read something in how your opponent threw, and recalibrate for the second. Survival removes this. Every throw is the throw that determines whether you continue.
The competitive literature on single-elimination formats suggests that the optimal adjustment is toward genuine randomization rather than read-based play. In a best-of-three, the investment in reading your opponent pays off over multiple throws. In a single-throw elimination, the investment in reading may not be worth the cognitive load it adds — because the read can be wrong, and a wrong read in survival format costs everything.
The WRPSA's Survival game runs you through progressive elimination rounds. Each round you survive puts you against a harder sequence. The game tracks your streak and your throw distribution, letting you see whether you're genuinely randomizing or falling into patterns that an adaptive opponent could exploit.
Play it until you lose. Then look at what you threw before you lost.