PK: did not accept weapon as an answer; guess i should have said weapons?; also the cards and prime numbers are confusing cause what is so special about the 7 and the 3 that is not with the 5 and the 2? not sure (1 week, 4 days ago)
gbshok: This grid is not a very good one, I'm sorry!
On hand, you have the Missiles and Blades groups, which are clearly different from the other 2, so totally stand out.
On the other hand, you have 6 prime numbers and 6 card possibilities (and those are quite arbitrary if I'm honest), so it is nearly impossible to get those right even if you know the connection (1 week, 4 days ago)
MOG20: Very, very hard!
Didn't get any groups before the time ran out!
I don't think it should be medium.
Very good grid!
(1 week, 4 days ago)