The PSP version of puzzler Echocrome is to receive additional content.

The pack is released on the North American PlayStation store today, featuring 40 stages for $4.99, with a European release on the way.

There are also plans to re-release the original game with the additional content for a new unannounced price point.

The puzzler, released earlier this year, features a monotone art style and challenges players to guide a figure through a three-dimensional maze.

There are no plans to release the content for the PS3 version of the game.