Overview
- Siege Mode is a free three‐player co-op horde experience where teams defend an Imperial fortress against endless Tyranid and Thousand Sons waves.
- Players earn points by defeating waves and can spend them on Medicae Stimms, ammunition, Cadian reinforcements or a Dreadnought before choosing to extract or advance sectors.
- Patch 8.0 replaces per‐wave timers with a session‐wide countdown that grows after each wave and ramps up enemy difficulty more quickly beyond wave 15.
- The update introduces experimental ray-traced ambient occlusion and NVIDIA DLSS 4 support on PC alongside new paid cosmetic packs for White Scars and Blood Angels chapters.
- Space Marine 2 has sold over seven million units and Saber Interactive has confirmed that Space Marine 3 is now in development.