Singapore Pokémon GO trainers, your weekend is getting a big visitor — Gigantamax Rillaboom is stomping back into six-star Max Battles this Saturday, and this time the colossal Grass-type drummer is bringing its shiny form to Pokémon GO for the very first time.
What Is the Gigantamax Rillaboom Max Battle Day?
Max Battle Days are Pokémon GO’s flagship weekend events — a focused three-hour window where a single Gigantamax Pokémon takes over every active Power Spot across the entire map. On Saturday, 1 August 2026, from 2:00 PM to 5:00 PM local time (2–5 PM SGT for Singapore trainers), every Power Spot will host six-star Gigantamax Rillaboom battles.
If you’re new to Max Battles: round up two to four friends at a Power Spot, spend your Max Particles powering up G-Max moves, and work through Rillaboom’s massive HP pool before time runs out. Beat it and you get a catch encounter — and this Saturday, every single encounter is a fresh roll for the shiny.
Shiny Gigantamax Rillaboom Debuts This Weekend
The real headliner here is the shiny debut. Standard Rillaboom has deep green foliage and dark brown wood; shiny Rillaboom flips to a vivid lime-green and noticeably lighter brown — a clean, easy-to-read difference the moment you reach the catch screen. Since the shiny check runs at the catch encounter rather than the start of the battle, every successful fight is its own independent roll. Volume is the strategy — which is exactly what Max Battle Day is designed for.
Every Event Bonus on 1 August
During the event window (2:00 PM – 5:00 PM local time):
- Max Particle collection limit raised to 1,600 (default: 1,000)
- All Power Spots host Gigantamax Rillaboom six-star Max Battles
- Power Spots refresh more frequently with extra locations active
- 8× Max Particles from Power Spots
- Up to three Special Trades for the day
- Remote Raid limit temporarily raised from 10 to 20 (31 July 5:00 PM PDT through 1 August 8:00 PM PDT)
Starting midnight through to 5:00 PM local time:
- 2× Max Particles from exploring
- Only ¼ the usual Adventure distance needed to collect Max Particles while walking
Best Counters for Gigantamax Rillaboom
Gigantamax Rillaboom is a pure Grass type, giving it five weaknesses: Fire, Ice, Poison, Flying, and Bug. Fire-type Max attackers are by far the strongest play right now:
- Gigantamax Cinderace — G-Max Fireball delivers the highest Fire-type Max damage currently available
- Gigantamax Charizard — G-Max Wildfire is widely held and hits exceptionally hard
- Darmanitan (Standard Mode) — the top non-Gigantamax Fire-type Max attacker and a solid pick if you’re still building your Gigantamax roster
For move sets, Grass Knot + Earth Power is the toughest Rillaboom roll to face. Earth Power threatens Poison-type Pokémon you might bring for coverage, so check your roster before heading out. Tanky picks like Vespiquen and Corviknight lead survivability rankings if you’re grinding high volume across the full three hours.
Gigantamax Rillaboom rates SS for Grass-type attack and tops the chart for damage output against Water-type bosses. If your Max roster is missing a solid Grass attacker, Saturday is the right time to fix that — shiny or not. Head to your nearest Power Spots well before the 2 PM SGT start, stock up on Max Particles overnight, and check our events section for more Pokémon GO events in Singapore.
Is the Optional Event Ticket Worth Buying?
An optional paid ticket is available in the Pokémon GO Shop for US$4.99 (or the local currency equivalent — check the in-game shop for SGD pricing). The ticket is not purchasable with PokéCoins and is non-refundable. Buying it unlocks exclusive Timed Research with rewards of 1 Max Mushroom, 25,000 XP, 6,400 Max Particles, and 2× XP from Max Battles for the entire event window.
Worth it? If you’re planning a serious shiny grind across the full three hours, the extra 6,400 Max Particles alone justify the cost. For casual trainers doing a handful of battles with friends, the free event delivers plenty of value on its own.