iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Several Cassette Beasts mailbox codes have been announced, but none can be confirmed as working across platforms in October 2026 from the available official posts. Try them at the in-game mailbox and treat each result as platform- and date-specific.
Announced and reported Cassette Beasts codes
Bytten Studio’s announcement archive records four codes. It does not state expiry dates or confirm that they still redeem in October 2026. The fifth code below is attributed to community reports rather than a code value printed in the reviewed official announcement.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
Pokémon Pokopia - Nintendo Switch 2 | $69.00 | Buy on Amazon |
| 2 |
|
Minecraft - Nintendo Switch | $29.83 | Buy on Amazon |
| 3 |
|
Yoshi's Crafted World - Nintendo Switch | $52.90 | Buy on Amazon |
| 4 |
|
Minecraft - Nintendo Switch 2 | $29.99 | Buy on Amazon |
| Code | Announced or reported reward | What is established |
|---|---|---|
YEAROFHORSE |
A surprise | Bytten Studio announced it in February 2026 for entry at the in-game mailbox; the post does not specify the reward details or an expiry date. Bytten Studio announcement archive |
HOLIDAYTREATS |
A wintery rare beast tape | Announced in December 2025. The reviewed post does not establish a current redemption result or expiry date. Bytten Studio announcement archive |
1MILLION |
An in-game surprise | Announced in November 2025. The same post reported that the game had sold over 1.1 million units across all platforms, a developer-reported figure rather than an independently audited count. Bytten Studio announcement archive |
HALLOWEEN25 |
A special monster tape | Announced in October 2025. The reviewed post does not establish a current redemption result or expiry date. Bytten Studio announcement archive |
ANNIVERSARY3 |
Not stated in the reviewed official announcement | Community reports identify this as a 2026 anniversary code. The official anniversary zine announcement confirms a new mailbox giveaway code but does not print its value in the reviewed text. Treat this code as community-reported, not officially confirmed there. Bytten Studio announcement archive Cassette Beasts community wiki |
These are announced or reported codes, not a verified list of codes working today. The official posts reviewed do not supply live redemption results, and community reports describe differing outcomes by platform and date. Bytten Studio announcement archive Cassette Beasts community wiki
How to redeem a mailbox code
- Start Cassette Beasts on the platform you want to use.
- Find the in-game mailbox.
- Enter the code exactly as written, then submit it and check the in-game result.
Bytten Studio’s code announcements direct players to enter codes at the mailbox in Cassette Beasts. The reviewed sources do not establish additional account or purchase requirements. Bytten Studio announcement archive
#1 Best Overall
- Shape the world and build a cozy new life with Pokémon as a Ditto transformed to look like a human.
- Use other Pokémon’s moves, like Bulbasaur’s Leafage, to revitalize and navigate the world around you.
- Meet and befriend more Pokémon as you help nature flourish.
- Gather materials to create items and furniture, till the fields to grow delicious crops, build homes for the Pokémon you meet, and more—there’s so much to do!
- Experience a world with varied weather, real-time days and nights, and other surprises.
Do the codes work on PC, Switch, and Xbox?
The official game page lists Steam, Xbox One, Xbox Series X|S, Xbox Game Pass, and Nintendo Switch. The official wiki also lists Windows and Linux on Steam. Those platform listings do not prove that mailbox codes redeem identically on every version. Cassette Beasts official game page Cassette Beasts community wiki
Try each code in the game on your own platform. If you share a result, include the platform and the date you tested it; a success or failure on one version does not establish the result on another.
Rank #2
- Minecraft is a game about placing blocks and going on adventures
- Explore randomly generated worlds and build amazing things from the simplest of homes to the grandest of castles
- Play in creative mode with unlimited resources or mine deep into the world in survival mode, crafting weapons and armor to fend off the dangerous mobs
- Play on the go in handheld or tabletop modes
- Includes Super Mario Mash-Up, Natural Texture Pack, Biome Settlers Skin Pack, Battle & Beasts Skin Pack, Campfire Tales Skin Pack; Compatible with Nintendo Switch only
What Cassette Beasts codes are for
Cassette Beasts is an open-world, turn-based RPG from Bytten Studio. Its central mechanics include recording monster forms to tape, battling with those forms, exploring with companions, fusing forms, and using elemental effects. The announced codes provide in-game surprises or tapes; no physical item is needed to redeem them. Cassette Beasts official game page
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Quick Recap
Rank #4
- Build whatever you can imagine in your own infinite world that’s unique in every playthrough.
Rank #3
- Explore each stage and then find even more secrets by making your way through the stage backwards on the flip side
- Overcome varied enemies and obstacles, like Zombie Guys, Skelesaurus, Ukiki, and Monty Mole as you seek out hidden collectables; ESRB Content: Mild Cartoon Violence; Genre: Action, Platformer
- Pass a Joy Con controller to a friend for 2 player cooperative exploration
- Clad Yoshi in collectable, protective, handicraft costumes as he makes his way through each stage
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
