Operation Chimera introduces an exciting new chapter in Tom Clancy's Rainbow Six Siege, focusing on a biohazard threat. This expansion features two new Operators, Lion and Finka, who are specially trained to handle the crisis of a mysterious parasite infection affecting a small New Mexico town. Each Operator comes with unique abilities that enhance gameplay and strategy, making them essential for players aiming to secure the perimeter against this new threat.

The gameplay emphasizes teamwork and tactical approaches to overcoming challenges posed by the infection. Players must navigate through intense scenarios while leveraging the distinct skills of Lion and Finka. With its action-packed sequences and strategic depth, Operation Chimera enriches the overall experience of Rainbow Six Siege, providing both seasoned players and newcomers with fresh content and engaging gameplay.