Maybe some quotes from the Sigalovada Sutta
(3) "What are the six channels for dissipating wealth which he does not pursue?
(a) "indulgence in intoxicants which cause infatuation and heedlessness;
(b) sauntering in streets at unseemly hours;
(c) frequenting theatrical shows;
(d) indulgence in gambling which causes heedlessness;
(e) association with evil companions;
(f) the habit of idleness.
(a) "There are, young householder, these six evil consequences in indulging in intoxicants which cause infatuation and heedlessness:
(i) loss of wealth, (ii) increase of quarrels, (iii) susceptibility to disease, (iv) earning an evil reputation, (v) shameless exposure of body, (vi) weakening of intellect.
(b) "There are, young householder, these six evil consequences in sauntering in streets at unseemly hours:
(i) he himself is unprotected and unguarded, (ii) his wife and children are unprotected and unguarded, (iii) his property is unprotected and unguarded, (iv) he is suspected of evil deeds, (v) he is subject to false rumours, (vi) he meets with many troubles.
(c) "There are, young householder, these six evil consequences in frequenting theatrical shows. He is ever thinking:
(i) where is there dancing? (ii) where is there singing? (iii) where is there music? (iv) where is there recitation? (v) where is there playing with cymbals? (vi) where is there pot-blowing?
(d) "There are, young householder, these six evil consequences in indulging in gambling:
(i) the winner begets hate, (ii) the loser grieves for lost wealth, (iii) loss of wealth, (iv) his word is not relied upon in a court of law, (v) he is despised by his friends and associates, (vi) he is not sought after for matrimony; for people would say he is a gambler and is not fit to look after a wife.
(e) "There are, young householder, these six evil consequences in associating with evil companions, namely: any gambler, any libertine, any drunkard, any swindler, any cheat, any rowdy is his friend and companion.
You would find more details in the sutta.
It does not mean that police officer's livelihood is wrong.
Its one attribute that such an officer is "vows" to act like ordered, I guess one could not honestly make such a vow when he observes precepts. Just form my experiences, I don't now many policeman who are not alcoholics sooner or later or fall into other big problems over the time. On the other hand, there are also some who could understand the way of live more clearly in having done such a job.
It's good that you follow your own realizations where ever you are, rather to try to paint a straight black white picture.
You could design games to let go of games as well. Kind of detoxification games, to bring people back into live. But therefore you need to study the mind and the Dhamma well and prove your medicine with much responsibility.
Maybe there will arise an idea:
The teachings of the Buddha are nothing but to understand to let go of the games, why not making a game out of it. Without desire we do not come anywhere. Nirvana Quest is the only wholesome desire.