What happened to EAX?

Games used to boast about supporting Creative’s Environmental Audio Extensions, circa 2000 games like Thief, Hitman and Mafia would have distinct support for EAX and the difference was certainly there.

The most recent time I saw EAX even mentioned in a PC game was in Bioshock and before that Battlefield 2 & Doom 3.

I seem to recall it wasn’t particularly impressive with Bioshock, enabling EAX actually disabled the 5.1; so you were left with reasonable (but dry) surround sounds, or stereo sound with appropriately simulated environmental audio processing. With Doom 3 EAX came in as a patch, that ID software were forced to implement;

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