X40 wagering requirements on bonuses while you only credited 5% of the bet amount on other games than slot is always a ridiculous terms because you are forcing users to play slot which we all know that is worst game to accumulate wager.
The game contribution percentage for bonus wagering is like that. Online casinos always favor slot games. At the same time, the bonus contribution for other games is between 5% and 20%. You can also find examples where certain table games or live dealer games don't count for bonus wagering at all. That's usually the case with high-RTP games.