Top critical review
Fatal flaw: Some of the cups stick together!
Reviewed in the United States on December 30, 2019
We got two sets because two people bought the same Christmas gift for my daughter. We really liked the 2-player game aspect with the cards and had fun competing. Unfortunately some of the cups intermittently stick together! This completely ruins the game since the whole point is speed. In the first box 1 out of the 24 cups stuck at least half of the time when any of the other 23 were stacked inside. In the 2nd box 4 of the 24 stuck. If your cups don't stick, this would be a great set. But if they do stick they are frustrating since you are really trying to move quickly and they stick in the middle of a game. We are returning both sets and instead purchased the stacking cups on Amazon from "Speed Stacks" which is apparently the official company for sport stacking. It won't have the game element or the challenge cards (fun way to compete) but at least they won't stick! Really sad to need to return this. Fun set, well packaged, good concept, but ultimately fatally flawed.
Note that one of the boxes we got was labeled December 2018 below the UPC and one was labeled December 2019 (and the boxes were different dimensions although inside contents appeared identical) so the sticking cups would seem to be a systemic issue and not a one-time bad batch or something.