The prizes in Keno depend on how many numbers you match, but the payouts are not always the same. They are determined by the version of the game you are playing, or set by the casino themselves.
Some casinos offer larger prizes for matching 5 or 6 numbers, but a lower prize for matching 9 or 10. In other cases it’s the opposite, with bigger winnings for matching the most numbers but smaller prizes for fewer numbers.
Overall, the odds are the same. But it’s your money and your decision on which game to play. So as always, make sure you check the rules first before you start gambling on any mobile keno games.