Audio mode plays an official Clash Royale sound — a deployment cry, an attack noise or a voice line — and asks which card it belongs to. You can replay it as many times as you like, and unlike the visual modes nothing about the clue changes as you guess: it is your ear against the card list.
Press the button and the sound plays from the beginning; press it again and it restarts. There is no limit on replays and no penalty for using them, because the difficulty here is recognition rather than access. The sound is taken from the game as-is, at full length — it is not trimmed down or faded, so any distinctive tail in the clip is fair game as a clue.
Not every card in Clash Royale has a sound that identifies it on its own — some share generic effects and some are silent. Rather than pad the mode with clips that could belong to a dozen cards, Audio draws only from the cards that have a distinctive one: 86 of the 119 cards on the site. That means the daily Audio card is always genuinely identifiable by ear, and it also means roughly a quarter of the card list can be ruled out before you even start.
Listen for the register before the content: the game separates its cast largely by pitch, and deciding "small and high" versus "large and low" cuts the field immediately. Metal-on-metal usually means an armoured troop, a mechanical whirr means a machine card, and a spoken word — even an unintelligible one — narrows things to the small group of cards with real voice lines. The mistake to avoid is guessing cards that have no sound at all; they are not in the pool, so those guesses are simply wasted.
Yes, as often as you want. Replays are free and are not counted against you.
You can guess any card, but the answer is only ever drawn from the 86 cards that have a distinctive official sound — the rest are never the answer.
They are the cards’ own effects and voice lines from Clash Royale, hosted on this site so they load reliably and work offline.
Check that your device is not on silent and that this tab is not muted; mobile browsers also require a tap before any audio can start, which is what the play button provides.