If you check the reviews of Chicken Road 2 on Forocoches and similar sites, you might see some comment accusing it of being a scam. Unfortunately, this may be because it is not legally available in Spain.
InOut Games, the creator of the original Chicken Road, does not have a license from the General Directorate for the Regulation of Gambling (DGOJ), so it cannot offer its games in any regulated casino.
Therefore, to play Chicken Road 2 for real money, you must do so in an international casino. Be sure to try your luck on a reliable platform licensed in Curacao, Malta, or another recognized country!