Hello,
After using the Kian Game in the Wikidata Distributed Game (https://tools.wmflabs.org/wikidata-game/distributed/#game=15) I found the following major bug: the game ignores preexisting instance of statements, sometimes even adding an exact duplicate (see, for example, https://www.wikidata.org/w/index.php?title=Q20501861&diff=prev&oldid=907940290).
I hope this is fixed soon, since otherwise it seems to be a good tool.