We investigate the steady-state dynamical regimes of boundary-driven, dissipative bosonic chains subjected to $n$-photon drives. Using the truncated Wigner approximation, we explore how multiphoton drives shape the interplay between quantum fluctuations, nonlinear interactions, and dissipative processes in such quantum systems. We identify two main regimes: a chaotic hydrodynamic regime characterized by the restoration of a local $\text{U}\left(1\right)$ symmetry, photon saturation due to Kerr nonlinearity, and spatial prethermalization effects and a nonchaotic resonant nonlinear wave (RNW) regime exhibiting sub-Poissonian photon statistics, persistent ${\mathbb{Z}}_n$ symmetry, and quantum-driven phase decoherence. Our findings reveal the universal nature of the hydrodynamic regime and highlight the RNW regime's sensitivity to boundary driving conditions, suggesting novel routes for quantum state engineering in driven-dissipative quantum devices. These results are experimentally relevant for state-of-the-art circuit quantum electrodynamics platforms.

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• Dissipative dynamics
• Nonequilibrium statistical mechanics
• Open quantum systems & decoherence
• Quantum optics
• Quantum simulation
• Quantum state engineering
• Quantum states of light
• Nonequilibrium systems
• Approximation methods for many-body systems
• Chaos & nonlinear dynamics
• Langevin equation
• Phase space dynamics