Godzilla Battle Line teases 5th anniversary event, new monster on May 29

Godzilla Battle Line is lining up a clear return point for lapsed players: a 5th-anniversary project called GODZILLA RE:BOOT MONSTERS begins May 29, and TOHO says the season will add a new 4 Burning Millennium Godzilla battle piece. For anyone who drifted away from the real-time strategy mobile game, the next 48 hours matter because the livestream on May 27, called Gojibato Summit, is where TOHO plans to spell out the unit’s details and likely set the tone for the new season.

TOHO’s anniversary artwork also points to a larger rollout than a single unit drop. The key visual for the 5th-anniversary season features 12 monsters, which suggests the game is using the milestone to frame a broader roster moment rather than a simple login reward campaign. That matters in Godzilla Battle Line, where team building is the whole game: picking monsters, reading the meta, and deciding whether a new release is strong enough to reshuffle ranked play. A fresh 4 piece with Burning Millennium Godzilla at the center is exactly the kind of announcement that can pull veterans back into testing lineups.

The timing is tidy for players who want to plan ahead. The livestream lands on May 27, two days before the anniversary project starts, so the full reveal arrives before the season officially opens. TOHO has also made the project name itself part of the push, using GODZILLA RE:BOOT MONSTERS across its official materials. That branding makes the anniversary feel more like a season launch than a commemorative splash screen, with the May 29 start date acting as the real reset point.

Godzilla Battle Line, from Toho Co.,Ltd. and TOHO Games, first launched in 2021. The App Store listing says it has more than 4 million downloads worldwide, and it remains free with in-app purchases, which makes any meaningful anniversary content especially important for players deciding whether to reinstall. If TOHO follows through on the promise of a new monster, a new visual set, and a season-wide rollout, the 5th anniversary looks substantial enough to justify a comeback. The key hook is already there, and it is not nostalgia alone. It is a new 4 Burning Millennium Godzilla waiting on May 29.