10. A device for presenting interactive audio content, the device comprising: an audio input device; an audio output device; and a hardware processor connected to the audio input device and the audio output device, wherein the hardware processor is configured to: receive an interactive audiobook having narrative content that includes a plurality of action points, wherein each of the plurality of action points provides a plurality of user actions and a narrative portion corresponding to each of the plurality of user actions; receive a selection of a user engagement density from a user, wherein the selection determines a number of the plurality of action points in the narrative content of the interactive audiobook, and wherein a higher-selected user engagement density increases the number of the plurality of action points and a lower-selected user engagement density decreases the number of action points in the narrative content; cause, via the audio output device, the narrative content with the determined number of the plurality of action points to be presented to the user based on the selected user engagement density; determine, via the audio input device, that a speech input has been received at one of the plurality of action points in the narrative content of the interactive audiobook; convert the speech input to a text input; determine whether the user action associated with the text input corresponds to one of the plurality of user actions; select the narrative portion corresponding to the text input in response to determining that the user action corresponds to one of the plurality of user actions; convert the selected narrative portion to an audio output portion; modify the narrative content of the interactive audiobook with the converted audio output of the selected narrative portion; and cause, via the audio output device, the narrative content with the converted audio output of the selected narrative portion to be presented to the user.
10. A device for presenting interactive audio content, the device comprising: an audio input device; an audio output device; and a hardware processor connected to the audio input device and the audio output device, wherein the hardware processor is configured to: receive an interactive audiobook having narrative content that includes a plurality of action points, wherein each of the plurality of action points provides a plurality of user actions and a narrative portion corresponding to each of the plurality of user actions; receive a selection of a user engagement density from a user, wherein the selection determines a number of the plurality of action points in the narrative content of the interactive audiobook, and wherein a higher-selected user engagement density increases the number of the plurality of action points and a lower-selected user engagement density decreases the number of action points in the narrative content; cause, via the audio output device, the narrative content with the determined number of the plurality of action points to be presented to the user based on the selected user engagement density; determine, via the audio input device, that a speech input has been received at one of the plurality of action points in the narrative content of the interactive audiobook; convert the speech input to a text input; determine whether the user action associated with the text input corresponds to one of the plurality of user actions; select the narrative portion corresponding to the text input in response to determining that the user action corresponds to one of the plurality of user actions; convert the selected narrative portion to an audio output portion; modify the narrative content of the interactive audiobook with the converted audio output of the selected narrative portion; and cause, via the audio output device, the narrative content with the converted audio output of the selected narrative portion to be presented to the user. 12. The device of claim 10 , wherein the hardware processor is further configured to: transmit the speech input to a speech recognition system; and receive the text input from the speech recognition system that corresponds to the speech input.