Hybrid Dealer Roulette 4-Ball Extra Bet adds an inner wheel with four balls to the main roulette presentation. Its extra wagers concern colour matches between the inner and outer wheels. Inspired's Hybrid Dealer combines RNG outcomes, CGI and recorded hosts rather than a continuously filmed physical studio round. Both single-zero and double-zero editions exist, so the selected wheel configuration must be checked before applying the corresponding standard roulette odds.
To compare related table games formats, read the rules of European Christmas Roulette and Mega Fire Blaze: Breaking Bad Roulette.
The library also explains roulette wheel formats and multiplier rules to help put these mechanics in context.
Source: published game information.