The Playstation 2's MOST OBSCURE feature: Sony S-FORCE 3D Sound Library in Silent Hill 2 🎧

According to rumors I heard, Sony had originally made a deal with Aureal to use their A3D soundchips on the Playstation 2 before Creative sued Aureal to death. I guess S-FORCE was their way of going around those greedy pricks. Unfortunately, S-FORCE never caught on, likely due to its rather poor sound quality. Compared to OpenAL Soft HRTF via DSOAL (with cubic resampling), you can barely tell where the enemies are in relation to you. Only four known games ended up using S-FORCE: Silent Hill 2, Disaster Report [絶体絶命都市], Siren [Forbidden Siren in the EU], and Kingdom Hearts II. S-FORCE would later be repurposed into cheap Virtual Surround on Sony's various smartphones and DVD players.