World four turned out to be quite long and complex, and the overall tone of the game turned much darker. Many of the level foundations became purple and grey, which could not be destroyed by laying photographs or photographed themselves. What seemed to be a restriction actually quickly became another puzzle, where (for example) a photo of a battery inside a purple cage could be placed as just the battery. Where walls were made of standard material but floors were made of purple, the walls could be vanished with the application of a photo of the sky, leaving a clear path through. I struggled a fair bit with a couple of the levels, before I suddenly realised an obvious solution.
And then onto World 5, where the story became more ominous and the mood ever darker. Cait the cat didn’t want me to find the weather device. Bits of building and objects just hung in the air, with gravity seemingly forgotten. Levels became ever more complex and foreboding. At one point I went back to the first World to explore a bit and find the collectible ducks, just for a break.
One of the more freaky things about the last World is the timed camera, which allows you to run around and take a photo of yourself. Remember in Portal, at the start of the game, when you place a portal and then can see yourself running into it, through the other portal? Imagine that, but instead of seeing a human character you see a mess of interference lines which vaguely take the shape of a person. Placing that photo instantly teleports you to the location of your silhouette, and you need to make sure you have multiple copies if you need to teleport out again.





And then the final level, which suddenly introduced a time limit and required all the different skills that had been present throughout the game. In the end the time limit was more than enough to complete tasks, but working out how to do them was more of a challenge. I think it took me five attempts, before I finally found the science experiment and departed from the simulation.
Really fun as a game, and it certainly didn’t overstay its time; as with all the best games, it introduced new mechanics regularly and only used them a few times before assuming they were now just part of the repertoire.









