Jak and Daxter: The Lost Frontier is a spin-off from the main Jak and Daxter series which was released in 2009 for the PlayStation 2 and PSP.
The game is set after the events of Jak X: Combat Racing where Keira has left to complete her quest of becoming a Sage. Jak and Daxter both join her on the quest as they engage on their own mission to discover why Eco is suddenly in short supply and fix it before the planet dies.
Just like with the other games in the series, players control Jak as the pair explore the world to complete their mission and save the planet; their mission isn't easy however, Eco pirates get involved and the villain behind the Eco shortage won't give up without a fight.
Gameplay in Jak and Daxter: The Lost Frontier is focused more on customization and vehicles however the game also features the classic platforming and combat elements seen in previous games.
The player takes control of Jak for most of the game which is split between platforming and driving vehicles; Jak can be upgraded with a large number of Eco Upgrades and has a range of abilities including several ones that are new to the series. During some portions of the game, the player will control Daxter.
A large portion of the game is played on an Airship which is controlled by the player and can also be upgraded; the ship has various stats which can be increased to specalize it, the new equipment for it can be purchased or found by completing quests.
Combat is done on the ground and also from the Airship; the player has a range of weapons at their disposal including firearms and melee weapons. Some enemies can only be killed by targeting their weak points and there are several bosses in the game.
 What's new
The biggest addition to the game is the change of gameplay focus; this is the first game to place more emphasis on the Airships and character customization. There is also a new “Hero Mode” which is unlocked after the main game has been completed once, this allows the player to replay the game on a more difficult setting.
A new mechanic has been added to the game called “Dark Daxter” where the player controls a different version of Daxter who has been given special abilities; a number of levels in the game are based around this new mechanic.
Airship – Take control of the ship and fly between the different worlds
Customization – Form a unique playstle by leveling into different areas and upgrade the Airship
Unique enemies – Fight a range of enemies of varying difficulties
Hero Mode – Complete the game once to unlock a more difficult mode
 Players liked:
- The airship combat is great
- Hero Mode is fun
- Strong platforming elements
 Players didn't like:
- The story is too short
- Dark Daxter levels are weak
- Combat is repetitive
This game is also known as Jak x Daxter: Elf to Itachi no Daibouken in Japan.