Catch a Monster Codes (August 2026)

What are Catch a Monster codes?

Catch a Monster codes are short strings the developers hand out — usually to mark an update, a like or visit milestone, or a seasonal event. You redeem one in-game for a reward you would otherwise have to grind for. Each code works once per account, and most are switched off within days or weeks of release, which is why a list that is not re-checked goes stale fast.

Catch a Monster codes not working? How to fix it

• Type it exactly. Codes are usually case-sensitive and almost never contain spaces. Copy and paste rather than retyping, and check you have not picked up a trailing space.
• Check it has not expired. Most codes are switched off within days or weeks. A code that fails on a fresh account has almost certainly been retired.
• One use per account. A code that already worked for you will be rejected the second time, which reads the same as an invalid code.
• Check you are in the right game. Roblox allows duplicate names. Codes from a page covering a similarly named experience will never work here.
• Update the game. New codes sometimes require the latest version — rejoin the server before deciding a code is dead.

How to get more Catch a Monster codes

New codes are announced by the developers first, usually on the game’s Discord and its Roblox group description, then picked up by code sites a few hours later. Following the source directly is the fastest route; this page is the slower but checked one — nothing appears above until it has been confirmed against two independent sources.

If you find a Catch a Monster code that is not listed here, it is either brand new or was never valid. We add codes as soon as a second source confirms them.