Looking for something terrifying? Own a PSP? Then quit whatever you’re doing and go download Corpse Party from PSN for a very reasonable £11.99.

I’ve mentioned this briefly a couple of times over the last few days but it’s worthy of some more in-depth enthusing, so here goes.

Corpse Party is a horror adventure game that uses a combination of Chrono Trigger-style top-down visuals and beautifully-drawn anime-style stills to tell its tale. And what a gruesome, horrifying tale it is.

Following a botched attempt to cast a friendship charm as one of a group of friends is set to leave her school, eight Japanese high schoolers and their teacher find themselves trapped in an unpleasant situation: a ruined, abandoned, creepy old school that is not their own, populated by malevolent ghosts and a wide variety of mutilated dead bodies — obviously previous victims of whatever curse brought them there. It’s up to the player to get to the bottom of what’s going on, and attempt to get the kids home. I haven’t finished it yet, so I don’t know if they’re successful.

Corpse Party initially puts across the impression of being just another light-hearted anime adventure. But things quickly take a turn for the dark as the corpses start piling up and the numerous mysteries surrounding the ruined school start to reveal themselves. Gameplay is limited to wandering around, exploring and making occasional choices, so the game is perhaps best compared to a visual novel rather than an adventure game or survival horror, but it manages to be one of the most affecting, evocative games I’ve ever played using the bare minimum of tricks and gimmicks.

It achieves this in a variety of ways. First up is the excellent writing and localisation. Not only is the tale told one filled with unexpected twists and turns, but it’s also one populated with believable, “human” characters who are far from being “video game heroic”. They’re kids. They talk like kids, they swear like kids, they make inappropriate comments like kids and they react like kids would in horrific situations like the ones in the game — by screaming, crying and running away.

The game doesn’t hold back in its writing, preferring instead to depict its characters’ behaviour in a realistic manner rather than the sanitised view of life we get in many other video games. For example, in one flashback scene depicting one of the characters’ lives before the events of the game, we see a big sister (one of the main cast) and her little brother in the bathroom together. Both are nude. Big sister, who is somewhat outspoken and borderline brash at times, teases her little brother for being ashamed of his nakedness and hiding his penis from her, tackles him to the ground and tickles him, behaving as siblings do. There’s no inappropriate eroticism in the scene despite the characters’ nudity, just a believable depiction of two very “human” characters enjoying a mundane moment together.

A lot of the power of Corpse Party’s writing comes from this clash between the mundane and the uncanny. Chapters will often open with a flashback of the “good old days” before the botched charm made everything go wrong for these kids, and it makes the anguish and terror they go through all the more profoundly affecting having seen what they’re like in situations that they’re comfortable with.

The writing is wonderfully descriptive without being overly explicit, either. Some of the most toe-curling, unpleasant scenes in the game come from a blank screen accompanied only by text and minimal sound effects. And yet somehow the manage to be far more horrific than anything I’ve seen on a next-gen console. The imagination is truly a powerful thing.

Imagination is all very well, but it can be helped along in a few ways. Firstly, there’s the visual side of things, which is kept relatively simple for the most part — old-school pixel art RPG-style graphics punctuated with occasional hand-drawn closeups to emphasise particular scenes.

Star of the show is the game’s sound design, though. Best experienced on headphones, Corpse Party’s soundtrack combines a variety of atmospheric, dramatic and memorable musical themes with subtle use of sound effects and some truly fantastic Japanese-language voice acting. The delivery is packed with emotion, making the kids’ screams of terror all the more harrowing as you find yourself really believing what’s going on. And the use of stereo makes for an impressively unnerving experience.

While some may object to a game which features quite so much violence against children, I for one have so far found the mature treatment of the player to be refreshing. The game doesn’t pull any punches at any point, meaning that you’re just as likely to meet an agonising and drawn-out demise when playing as a little girl as you are when playing the “tough” guy. Far from feeling “wrong”, however, the knowledge that the game’s characters are in very real danger throughout provides a strong emotional impetus for the player to get to the bottom of what’s going on and try to save them.

The only criticism of the game I have is the fact that if you find yourself down one of the “bad ending” paths and meeting a sticky end, you can sometimes lose a bit of progress if you haven’t been saving fastidiously at the game’s sparsely-scattered save points. With no means to quickly skip through scenes you’ve already seen once, this can be a little frustrating for the impatient (or those who can’t work out what they’re doing wrong — though it’s usually obvious).

This little issue far from ruins the experience, however. In fact, those who want to “100%” the game will actually need to see all of these unpleasant endings as well as the “proper” ends to each of the game’s five chapters, meaning that an unpleasant death for one of the cast isn’t necessarily wasted play time.

Above all, Corpse Party is a rewarding, affecting, remarkable experience that treats the player as an adult throughout. It’s refreshing to play through something which doesn’t feel sanitised or dumbed down in the slightest, and I’m both surprised and delighted that a game like this made it on to the Western PSN store.

I’m certainly not complaining, though. In fact, I’d like to see a lot more titles like this in the future.