Thread:Lapo90/@comment-41.224.75.225-20150209190723/@comment-82.10.99.205-20150211210047

Statistically the drop-rate is a 50-1 'per-battle' and so the number of gains/losses previously has nothing to do with your chances of a favourable outcome.

You could theoreticallyplay the game beating the bosses at every opportunity and never a drop prize.

An iOS developer buddy of mine has tried to debug the rewards procedure and is all but certain that there are some undisclosed processes that determine 'your suitability' as a worthy recipient of a frag, all which takes place internally to z2.

The consistancy of a player's involvement in the game is likely to be a factor as the general concensus among long-time players seems to be that they only got rewarded in boss battles when their play style was frequent and that they cleared as many spawns as were presented to them, something which z2 has neither confirmed or denied when asked directly by information requests (they apparently declined to answer on the grounds of intellectual property).