Series 38 is officially called "Hidden Horizons" and sees the debut of an all-new game mode — which also forms part of the Playlist, at least for this month.
That's "Hide & Seek", a 5 vs 1 online multiplayer event which sees one player trying to blend in with traffic cars while five hunt them down until they can reach the escape zone. New Accolades are available in this mode, with Achievements coming next month.
Another new addition this Series is the Horizon Stadium Maze which is pretty much exactly what it sounds like: a high-walled maze built into the stadium. Try not to get lost!
Four new reward cars await for collecting 20pt within each season, and although there's once again no fifth vehicle as an overall reward you can score a special tie-in Camaro for free through your messages.
Series 38: Hidden Horizons
Two Playlist-exclusive Nissans are on offer for overall Series rewards, with the Tsuru at 80 points and the Safari for 160 points.
Series 38 Summer/Wet Season Rewards
Summer will run until 1430UTC on Thursday September 19, with Series 38 running for another three weeks until the same time on Thursday October 10.
Series 38 Summer Playlist: Forzathon Events
Note that you'll need to wave a tuning stick at the Trident for the second stage of its event, as it requires the car to be at least in the B Class (601-700PI) performance bracket. There's also a rare Xbox Live Core requirement for the Friday Daily Challenge which sees you head into Hide & Seek.
Series 38 Summer Forzathon Weekly Challenge: Fruits of Your Labor
- Car: Peel Trident '65
- Chapter 1: Own and drive the Peel Trident
- Chapter 2: Earn three stars at Speed Zones in B Class (601-700PI) or above
- Chapter 3: Win a Road or Drag race
- Chapter 4: Take a Photo
- Reward: 5 points, 80FP
Series 38 Summer Daily Challenges
- September 12 – A-Maze-ing!: Visit the Hidden Horizons Stadium Maze
- September 13 – Sneaky But Speedy: Earn 5 Speed Skills in a game of Hide & Seek*
- September 14 – Suited Up: Equip the Camo Race Suit in the Character Customizer
- September 15 – Utility in Demand: Take a photo of the 1955 Chevrolet 150 Utility Sedan
- September 16 – Undercover Operations: Win a Street Race
- September 17 – 3, 2, 1…: Earn three Stars at the Launch Control Danger Sign
- September 18 – Testing Grounds: Play any EventLab from the Creative Hub
Series 38 Summer Playlist: Season Events
That's the permanent fixture of The Trial, this week being another dirt racing event likely short on player control despite the low B Class (601-700PI) requirement for the British cars eligible. Make sure you have a dirt tune or at least offroad tires.
Horizon Tour is similar, with slower AI and the requirement to drive between races. It also comes with no bonus rewards, just the points.
Both PR Stunts require the same car type — an A Class (701-800PI) Mitsubishi — and you'll need some offroad abilities for each too.
There's only one EventLab challenge this week, as you head to the Island for a unique, community-created challenge.
The three Seasonal Championships bring a mix of events. You've got a Street Racing event for A Class (701-800PI) Jaguar models in 3am Zoomies, a Road Racing challenge for A Class (701-800PI) Barn Finds in Car's Out the Barn, and the Built Tough offroad series for B Class (601-700PI) Pickups & 4x4s.
The Trial: Secret Service*
- Car: B Class, UK
- Reward: 10 points, Jaguar I-PACE
Horizon Tour: Co-op Championships*
- Car: Any
- Reward: 8 points
EventLab: Meereen Creek Oasis
- Car: B Class, Modern Rally/Retro Rally
- Reward: 3 points, Super Wheelspin
PR Stunt Danger Sign: Boardwalk
- Car: A Class, Mitsubishi
- Target: 100m
- Reward: 2 points, Super Wheelspin
PR Stunt Speed Zone: Punto de Vista
- Car: A Class, Mitsubishi
- Target: 80mph
- Reward: 2 points, Super Wheelspin
Seasonal Championship: 3am Zoomies
- Car: A Class, Jaguar
- Reward: 5 points, Renault Megane R26.R
Seasonal Championship: Built Tough
- Car: B Class, Pickups & 4x4s
- Reward: 5 points, Mitsubishi Lancer GSR '08
Seasonal Championship: Cat's Out of the Barn
- Car: A Class, Barn Finds
- Reward: 5 points, Jaguar E-Type
Series 37 Spring Playlist: Challenges
The Treasure Hunt will have you scoring six stars in Speed Zones in any EV to reveal the chest which — as it will be across the Series — is located within the Stadium Maze. This week it's in the blue zone, next to a beacon to the right under the ramp as you enter from the west.
Hide & Seek: 5 vs 1*
- Cars: Any (provided)
- Location: Hide & Seek
- Reward: 2 points, Super Wheelspin
Photo Challenge: #Expedition
- Cars: Any
- Location: Ek'Balam
- Reward: 2 points, Camo Race Suit
Treasure Hunt: EV-En the Odds
- Cars: EV (any)
- Location: Speed Zone (any)
- Reward: 3 points, 100FP
Series 38 Summer Playlist: Monthly Events
Monthly Rivals: Lookout Circuit
- Cars: Volvo C30 Polestar (provided)
- Reward: 4 points (1 added to each season)
Monthly Rivals: Plaza Circuit
- Cars: Mitsubishi Lancer Evo III GSR (provided)
- Reward: 4 points (1 added to each season)
Series 38 Summer Bonus DLC Events
The usual 14 points is available for players who own the two DLC expansions, with seven points on offer in each of the locations. There's a PR Stunt and Seasonal Championship in each location, with both PR Stunts requiring a car of the same type: a B Class (601-700PI) Volkswagen.Hot Wheels Speed Trap: Horizon Nexus
- Car: B Class, Volkswagen
- Target: 160mph
- Reward: 2 points, Super Wheelspin
Hot Wheels Seasonal Championship: Flex Those Muscles
- Car: S1 Class, Modern Muscle
- Reward: 5 points, Formula Drift Mustang #13
Rally Adventure Speed Zone: Devil's Pass
- Car: B Class, Volkswagen
- Target: 73mph
- Reward: 2 points, Super Wheelspin
Rally Adventure Seasonal Championship: C for Classic
- Car: C Class, Classic Rally
- Reward: 5 points, Ford Lotus Cortina
Series 38 Summer Forzathon Shop
- Mercedes-Benz 300SL '54 – 500FP
- Toyota 2000GT '69 – 200FP
- Horizon Colorado Tee – 75FP
- Colorado Cover Car Horn – 75FP
- Jump On It Emote – 75FP
- Super Wheelspin – 150FP
- Wheelspin – 60FP