All perfect praise be to Allaah, the Lord of the worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
If the games are permissible and the money paid in them are not for winning the game; rather, they are for just playing, then there is nothing wrong with playing them and the winner can benefit from what he wins of such prizes. Hence, it is permissible for you to work in such games and pointing out how to play them.
On the other hand, if the games are not permissible or that all or some of the money paid in them is just for getting or sharing such prizes, then these games will not be permissible; rather this will be a form of gambling.
However, the latter possibility is actually the most likely and thus it is more appropriate to avoid working in those games so that the worker may not be helping others to commit sin. Allaah The Almighty says (what means): {…but do not cooperate in sin and aggression.}[Quran 5:2]
Allaah Knows best.