Listen for the phrase that matters in a stream of spoken Spanish, single it out, then recall what it meant.
Each round plays a sequence of spoken phrases where exactly one is the relevant target and the rest are noise. First, tap only the relevant phrase out of the stream; then choose its English meaning from a set of options. Phrases you get right come back at longer intervals, so the game grades your listening over time.
Whisper Trail trains listening comprehension as a signal-detection challenge, tuning the ear to a new language.
Picking the one relevant phrase out of a stream of spoken noise is selective listening — the cocktail party effect, the ability to attend to one voice among many.
Requiring the selection before the comprehension question is the original sequencing.
Listening in a second language fails at exactly this step. Comprehension is usually adequate once you know which words matter; the difficulty is segmenting continuous speech and deciding what to attend to in real time, which no vocabulary drill practises.
Whisper Trail is an original, free browser game that trains listening comprehension as a signal-detection challenge with spaced recall. It is built in-house and runs online.