Recommended: PC Feels Slow? A Free Scan Shows What's Dragging Windows Down →Recommended: Update Every Outdated Driver on Your PC in One Scan - Free →
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
The Hot and Cold laboratory code in Blox Fruits is Red, Blue, Green, Blue. Tap the panels 1, 3, 2, and 3 times, respectively. The panels are in the laboratory on the cold side of Hot and Cold in the Second Sea.
How to enter the Hot and Cold code
- Travel to Hot and Cold in the Second Sea and locate the laboratory on the cold side. The Blox Fruits Wiki’s Hot and Cold guide identifies the island’s location.
- Unequip anything your character is holding, as advised by the Blox Fruits Wiki’s Mysterious Scientist guide.
- Tap the colored panels in this order:
- Red: once
- Blue: three times
- Green: twice
- Blue: three times
- The wiki says the sequence opens a secret door.
What does the code open?
The community-maintained wiki describes the result as a secret door, while a separate CyberPost guide associates the code with access to the Raid lobby entrance. Because those descriptions do not establish the door’s precise destination in the same terms, the safest answer is that entering the code opens the secret door; the sources differ in how they describe where it leads.
Source note
The sequence and location guidance are from community-maintained Blox Fruits Wiki pages updated September 24, 2026; the Raid-lobby description appears in CyberPost’s July 30, 2025 guide. These are gameplay guides, not official developer documentation.
Quick Recap
SaleBestseller No. 1
Bestseller No. 5
Best Value
GameSir Nova Lite 2 Wireless PC Controller Hall Effect Sticks
- Multi-Platform PC Gaming Controller: Working with Switch, PC, Android, and iOS devices via Bluetooth, wired, and wireless dongle connections.
- Hall Effect Joysticks: Delivering enhanced recentering performance for smoother control and superior anti-drift capability. Plus, with anti-friction rings.
- 2-Way Trigger Lock: With trigger stops, gamers can toggle between short and long pull positions. Additionally, gamers can activate hair trigger mode by pressing M+LT/RT (triggers must be in the long pull position).
- 1000Hz Polling Rate: This ensures that your inputs are registered almost instantaneously, minimizing lag and maximizing your performance during competitive play.
- Mechanical Circular D-pad: Designed for quick reactions and accuracy in every direction, this D-pad elevates your gaming experience with superior responsiveness.
Rank #4
Sale
XBOX Wireless Gaming Controller + USB-C Cable | Carbon Black
- XBOX WIRELESS CONTROLLER + USB-C CABLE — Includes the XBOX Wireless Controller in Carbon Black and a 9' USB-C cable. Play wirelessly or plug in for a wired gaming experience, right out of the box.*
- WIRED OR WIRELESS, YOUR CALL — Connect the included 9' USB-C cable for zero-setup wired play on console and PC. Go wireless when you want the freedom to play from the couch, the desk, or anywhere in between.
- PC READY. NO EXTRAS NEEDED — Plug the USB-C cable into your Windows PC and you're playing instantly. No adapters, no Bluetooth pairing, no additional purchases required. Works across the XBOX app, Steam, and more.*
- MODERNIZED DESIGN — Experience sculpted surfaces and refined geometry designed around how you actually hold a controller. Stay on target with a hybrid D-pad and textured grip on the triggers, bumpers, and back case.
- UP TO 40 HOURS OF BATTERY LIFE — Get up to 40 hours of wireless battery life on standard AA batteries. When the batteries run low, plug in the included cable and keep playing without missing a beat.*
Rank #3
GameSir G7 SE Wired Controller for Xbox Series X|S, Xbox One & Windows 10/11, Plug and Play Gaming Gamepad with Hall Effect Joysticks/Hall Trigger, 3.5mm Audio Jack (White)
- Versatile compatibility: supports Xbox Series X/S, Xbox One X/S consoles and PC Win10 and above (including the game platform Steam).
- Precise control: features Hall joysticks and Hall triggers for a comfortable feeling, long service life and improved game accuracy.
- Plug and Play Convenience: Wired USB connection (removable) for easy setup and instant play without the need for additional drivers.
- Customizable experience: Includes 2 custom backbuttons that allow users to eliminate false triggers and improve their gaming experience.
- Impressive gameplay: Provides a pulsating vibration trigger and an asymmetric vibration grip motor for intense tactile feedback.
Rank #2
GameSir G7 Pro Wired Controller for Xbox Series X|S, Xbox One, Wireless Gamepad for PC&Android with TMR Sticks, Hall Effect Analog Triggers, 1000Hz Polling Rate, 3.5mm Audio Jack - Black
- Tri-mode Connectivity: Wired for Xbox, 2.4G & Wired for PC, and Bluetooth for Android. The G7 Pro supports seamless connectivity across Xbox, PC, and Android. Effortlessly switch between modes using the convenient physical mode switch.
- TMR Sticks: The G7 Pro features GameSir's Mag-Res TMR sticks, combining Hall Effect durability with traditional potentiometer performance. This advanced technology delivers stable polling rates for smooth, drift-free gaming with low power consumption.
- Hall Effect Analog Triggers: The GameSir precision-tuned Hall Effect analog triggers provide unmatched smoothness and linear input for precise control. Featuring clicky Micro Switch trigger stops, gamers can easily switch based on their preferences.
- 1000Hz Polling Rate on PC: Experience ultra-responsive gaming with a 1000Hz polling rate on PC, available through both wired and 2.4G wireless connections. This ensures instantaneous input registration, reducing lag and optimizing your performance for the most competitive gameplay.
- GameSir Nexus App: The G7 Pro is compatible with the upgraded GameSir Nexus app, which brings a significant upgrade over the original. It introduces powerful new features such as gyro settings, stick curve adjustments, and button-to-mouse mapping, giving you deeper customization and more control than ever before.
#1 Best Overall
Sale
8Bitdo Ultimate 2C Wireless Controller for Windows PC and Android, with 1000 Hz Polling Rate, Hall Effect Joysticks and Triggers, and Remappable L4/R4 Bumpers (Green)
- Compatible with Windows and Android.
- 1000Hz Polling Rate (for 2.4G and wired connection)
- Hall Effect joysticks and Hall triggers. Wear-resistant metal joystick rings.
- Extra R4/L4 bumpers. Custom button mapping without using software. Turbo function.
- Refined bumpers and D-pad. Light but tactile.
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.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone. 
