A shift in time saves nine.

Not so long ago, during a friend's ill-judged stag party in Keswick, I met a chap who helps to manage Piccadilly railway station in Manchester. Honestly, I know nothing of what his job involves - but I imagine that, in between motivational speeches to the chaps who pick the crusted vomit off the night trains, he spends a lot of his time doing the sort of thing which would make him rather good at echoshift.

A sequel to 2008's classy puzzler echochrome, echoshift continues the trend of non-capitalisation and mannequin heroes, but adds a splash of colour to the original's world along with the new mechanic of 'casting' (which replaces echochrome's Escher-style distortion of 3D space). Casting is a concept which players of Braid or the more recent The Misadventures of P.B. Winterbottom will probably be familiar with.

Each level is a puzzle, the solution to which is to reach the exit door. In between your entry point and the door out are various flavours of switch, barrier, enemy and moving platform - negotiate these and you're home free.

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E3: Sony reveals echochrono for PSP

Self co-op! Out this winter.

Sony has whipped the wrappers off of echochrono (working title) for PSP, a brand new spin-off of echochrome - the Escher-like puzzler where shifting perspectives make minds melt.