The latest code listed for Cassette Beasts is ANNIVERSARY3, which grants a Lightning-type bootleg Sirenade. The game’s official wiki marks seven of the 17 listed codes active, but that status is not a live redemption check as of October 8, 2026. Enter codes at the mailbox in the Gramophone Café while connected to the internet.
All Cassette Beasts mailbox codes and rewards
The table follows the code, reward, release date, and status shown in the Cassette Beasts Wiki mailbox table. “Active” and “inactive” describe the wiki’s displayed status; they do not guarantee whether a code will redeem today.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
Cassette Beasts (Original Game Soundtrack) | $11.49 | Buy on Amazon |
| 2 |
|
Beasts Card Game | $16.32 | Buy on Amazon |
| 3 |
|
Breaking Games Mixtape Family Friendly Card Game for Teens, Kids, & Adults | $19.95 | Buy on Amazon |
| 4 |
|
Up For The Ride (from "Cassette Beasts" Original Game Soundtrack) | $3.87 | Buy on Amazon |
| Code | Reward | Listed release date | Wiki status |
|---|---|---|---|
| VALENTINES | Glitter-type bootleg Dandylion | February 14, 2023 | Inactive |
| LAUNCHDAY | Metal-type bootleg Traffikrab | April 26, 2023 | Inactive |
| SUMMERTIME | Lightning-type bootleg Puppercut | June 29, 2023 | Inactive |
| HALLOWEEN | Fire-type bootleg Springheel | October 23, 2023 | Inactive |
| HOLIDAYS | Plastic-type bootleg Elfless | December 19, 2023 | Inactive |
| UNDYINLOVE | 1 Pear Fusilli; Fire-type bootleg Undyin | February 14, 2024 | Inactive |
| ANNIVERSARY | Lightning-type bootleg Pombomb | April 26, 2024 | Inactive |
| SPOOKY24 | Astral-type bootleg Pawndead | October 31, 2024 | Inactive |
| SNOWTIME | Ice-type bootleg Sanzatime | December 13, 2024 | Inactive |
| LUNARNY | Plastic-type bootleg Carniviper | January 29, 2025 | Inactive |
| SURVEYTHANKS | Water-type bootleg Squirey | April 3, 2025 | Active |
| ANNIVERSARY2 | Glitter-type bootleg Sirenade | April 26, 2025 | Active |
| HALLOWEEN25 | Astral-type bootleg Folklord | October 23, 2025 | Active |
| 1MILLION | Ice-type bootleg Bansheep and Fire-type bootleg Candevil | November 12, 2025 | Active |
| HOLIDAYTREATS | Ice-type bootleg Busheye | December 16, 2025 | Active |
| YEAROFHORSE | Plastic-type bootleg Muskrateer | February 17, 2026 | Active |
| ANNIVERSARY3 | Lightning-type bootleg Sirenade | April 27, 2026 | Active |
How to enter a mailbox code
- Go to the Gramophone Café and find the red letter box in the player’s room or on the ground floor.
- Interact with the mailbox. It prompts you to connect to the internet.
- Use the mailbox keypad to enter the code and claim its gift if the code is accepted.
Bytten Studio also describes entering a code at the mailbox in the player’s apartment to receive a free gift. Its Steam announcements corroborate several newer codes, including YEAROFHORSE, HOLIDAYTREATS, 1MILLION, and HALLOWEEN25.
Which codes may still work?
The wiki marks the first ten entries, from VALENTINES through LUNARNY, inactive and the seven entries from SURVEYTHANKS onward active. These are the statuses shown in its table, not results from a live redemption test. The available sources do not establish explicit expiration terms, and acceptance can change, so try a code in-game while online rather than treating the status label as a guarantee.
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Rank #3
- 🎁 Perfect Gift for Any Occasion – Mixtape makes a fantastic gift for music lovers and game enthusiasts alike! Share the soundtrack of your life and create lasting memories with friends and family through hours of fun and laughter.
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Rank #2
- COOPERATIVE CARD GAME: Work together to play every card in the deck by manipulating a shared 3-digit number through clever teamwork.
- LIMITED COMMUNICATION CHALLENGE: Players must coordinate strategies without giving too much away, creating tension and excitement.
- FACE THE BEASTS: Creature cards block certain suits, forcing players to adapt their strategies and time plays perfectly to scare them off.
- HIGH REPLAYABILITY: With unpredictable number sequences and Beast interference, no two games play the same.
- FULL GAME SET INCLUDED: Comes with 72 number cards, 8 Beast cards, 3 tarot board cards, 3 discard tokens, and 5 player aids.
#1 Best Overall
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