My game has randomly stopped selecting obj_attackUp - every other drop works fine (I've run like 200 drops to make sure it wasn't just unlucky). Any ideas?? If I spawn one manually it works fine =\ EDIT: After some further investigation - there is also a sprite that I've changed which is still using the old one when i create the object. Also, in the issue from the OP - sometimes obj_player.kills mod 10 DOES == 0 but it drops nothing (I'm guessing it's selecting obj_attackUp and something is amiss). These issues are occurring on a windows build (I'm working on a mac). If I run it on the mac none of the issues are present.