Event names, dates, rewards, and availability can vary by region or server. This tracker separates confirmed store information from unverified claims and does not infer missing details.
Fast answer
The answer before the background
There is no verified official Brimstone season announcement that can be responsibly confirmed from the current public records. The latest identifiable release is version 4.2.4, dated January 28, 2026 on the App Store and reflected in the store listings. Its published note says the ads experience was improved for better stability and enjoyment. Do not treat a fan post, an unrelated game reference, or an unverified event banner as proof that the season is active. Check the in-game event panel and the official store history after updating before spending currency or planning a farming route.
Current status
What is live according to verified records?
The safest current answer is that version 4.2.4 is the latest publicly documented release found for Crazy Defense Heroes. The App Store history dates it January 28, 2026, while the Google Play listing shows the game was updated on January 20, 2026 and describes the same recent maintenance direction. The small date difference is normal for platform rollout and store display timing, so it should not be read as two different game versions.
The published 4.2.4 note is limited: the developer says the ads experience was improved to make the app more stable and enjoyable. It does not mention a new season, a Brimstone-themed invasion, new cards, balance changes, a special boss, or event rewards. That makes 4.2.4 a maintenance and quality-of-life update rather than a confirmed seasonal content release.
The publisher’s public web presence does document older co-op battle seasons, including a 2024 re-battle season, but those announcements concern the TOWER ecosystem and King Carrion. They are not evidence of a current Brimstone event in the mobile game.
- Confirmed current store version: 4.2.4.
- Confirmed latest named change: improved ad stability and user experience.
- Not confirmed: Brimstone event dates, rewards, cards, bosses, drop rates, or special rules.
- Practical conclusion: update the app, then verify the in-game event panel before committing resources.
| Check | Verified result | What it means |
|---|---|---|
| Latest store record | Version 4.2.4, January 2026 | Use this as the current public version reference. |
| 4.2.4 notes | Improved ads experience | No named seasonal content is listed. |
| Brimstone event | No official record found | Treat circulating claims as unverified. |
| Older seasonal content | Invasions and clan seasons are documented | The game does support rotating content, but names and schedules must be confirmed separately. |
A season should be considered confirmed only when its name and timing appear in an official store note, publisher announcement, or an in-game notice that can be checked directly. A screenshot without a date or source is not enough.
Dated checks
Major updates worth comparing
The recent update history shows a pattern of short maintenance releases followed by occasional feature or event updates. Version 4.2.3, dated January 21, 2026, lists performance improvements. Version 4.2.2, dated January 6, 2026, lists interface improvements and gameplay enhancements. Version 4.2.1, dated September 1, 2025, added a webstore option for special offers for United States players and further performance and stability work.
Version 4.2.0, dated July 16, 2025, introduced an offerwall that lets players earn gems through offers and tasks. That is a meaningful economy change, but it is not a Brimstone-season feature. Players should be cautious about confusing monetization updates with event systems because both can appear in the store’s short update history.
The clearest older content additions include Green Frenzy in version 4.1.4 on December 9, 2024, and the return of Green Frenzy alongside Nightmare access for Temple Ruins in version 4.1.1 on November 25, 2024. These notes show how the developer usually names event content when it is officially added. No comparable note naming Brimstone was found in the checked history.
- January 28, 2026: version 4.2.4, improved ads experience.
- January 21, 2026: version 4.2.3, performance improvements.
- January 6, 2026: version 4.2.2, interface and gameplay improvements.
- September 1, 2025: version 4.2.1, United States webstore option and stability work.
- July 16, 2025: version 4.2.0, offerwall rewards for gems.
- December 9 and November 25, 2024: Green Frenzy-related content and Nightmare access.
| Date | Version | Published change |
|---|---|---|
| January 28, 2026 | 4.2.4 | Improved the ads experience. |
| January 21, 2026 | 4.2.3 | Performance improvements. |
| January 6, 2026 | 4.2.2 | Interface and gameplay improvements. |
| September 1, 2025 | 4.2.1 | United States webstore option and performance work. |
| July 16, 2025 | 4.2.0 | Offerwall added for gem rewards. |
| December 9, 2024 | 4.1.4 | Green Frenzy invasion added. |
Store histories can update at different times on Android and iOS. Compare the version number and the developer’s note first, then use the platform date as the rollout check for your device.
Player checklist
How to verify the event before playing
If the game shows a Brimstone label in your client, verify it in this order. First, open the event or invasion panel and record the exact name, start time, end time, entry requirement, and reward preview. Second, restart the game after installing the latest store update so the client can fetch server-side event data. Third, compare the wording with an official announcement or store note rather than relying on a community nickname.
Next, check whether the event uses normal campaign cards, restricted cards, invasion tickets, clan participation, or a separate co-op system. These distinctions affect how you should spend energy and upgrade materials. Do not buy a limited bundle, convert rare resources, or chase an assumed drop rate until the reward table is visible in the game.
Finally, take a dated screenshot of the notice and check the event again after the next reset. If the name disappears, the timer changes, or the reward description conflicts with a social post, use the in-game notice as the immediate gameplay reference and report the discrepancy to support.
- Update through the official store for your platform.
- Record the displayed event dates in your local time zone.
- Confirm entry costs and card restrictions before using tickets or gems.
- Read the reward preview before upgrading a deck for the event.
- Keep screenshots when the event timer or rewards appear inconsistent.
- Use official support for account, purchase, or missing-reward problems.
These steps are general verification advice. They do not confirm that a Brimstone event exists, nor do they establish its rewards or mechanics.
Uncertainty check
What remains unverified
No reliable public record located for this tracker confirms a Brimstone season start date, end date, featured enemy, map, card restriction, reward currency, leaderboard, or special drop rate. The term may be a player nickname, a regional event label, a future announcement, or a mix-up with content from another game. Without a primary source, assigning any of those details would risk sending players toward the wrong activity.
The same caution applies to version claims newer than the publicly indexed 4.2.4 record. A store rollout can be delayed, a test build can be region-limited, or a server event can appear without a full app release. Until a later version is visible in the official store history or a dated publisher notice is available, 4.2.4 is the last version this tracker can verify publicly.
- Verified facts are limited to the dated store histories and publisher records listed below.
- Recommendations explain how to check the client safely; they are not event data.
- Unverified community names should not be used to infer rewards or drop rates.
- Recheck the official store and in-game notice after any server maintenance.
There is enough evidence to track the recent maintenance releases, but not enough evidence to publish a factual Brimstone event guide. The responsible status is unconfirmed.
Quick reference
What should players do now?
For ordinary play, install the latest available update for your device, continue using the cards and modes currently shown in your client, and avoid reserving resources for an unnamed event. If a dated in-game announcement appears, compare its details with the official version history and record the exact rules before building a specialized deck.
For returning players, the most relevant confirmed changes are the newer interface and performance work, the offerwall introduced in version 4.2.0, and the earlier invasion content. Those are documented changes. A Brimstone-specific strategy, team recommendation, or farming route should wait until the event’s actual restrictions and rewards are published.
- Update first, then restart the game.
- Use the event panel as the primary check for server-side availability.
- Spend only after entry costs and rewards are displayed.
- Return to this tracker when a new dated official note appears.
FAQ
Common questions
Is the Brimstone season officially confirmed?
Not from the public official records checked for this tracker. No verified publisher announcement, store note, or dated event listing naming that season was found.
What is the latest confirmed version?
Version 4.2.4 is the latest publicly verifiable store record located. The App Store dates it January 28, 2026, and its published change concerns improved ad stability and usability.
Does version 4.2.4 add new cards or a new invasion?
The published note does not say that it adds cards, an invasion, a boss, or a seasonal mode. It only describes an improved ads experience.
Could the event be available only in some regions?
That is possible, but it is not verified here. Regional availability should be confirmed through the event panel, the platform store for your account, or a dated official announcement.
Should I save gems or upgrade materials for it?
Only if your own client displays a dated event notice with clear entry rules and rewards. Otherwise, saving resources is a personal choice, not a response to a confirmed schedule.
Sources
What we checked
Official listings establish current availability and product facts. Community pages are used for mechanics and build history, then labeled separately.