Bored? Kill some of the precious time in the only life you'll ever have with these brilliant and mostly frivolous websites, each of which was recommended by one of our readers.

If you want to recommend a website (the next category is sports), send an email to [email protected], or visit PC Advisor's Speakers' Corner forum

1: Cat Box

Recommended by Fruit Bat /\0/\

It's a deceptively simple premise: there's a grid of circles (some of which are already filled in, at random); there's a cat in the middle of the grid; each turn you get to fill in one circle and he gets to move one space; you have to trap the cat.

But be warned that this addictive little game, by the wonderfully named website The Infinite Cat Project, holds the power to alter the fabric of time itself. One minute you're happily tapping away, over and over and over ("I'll get him this time!"), and suddenly it's three hours later and you're sitting in the dark. Escape now while you still can!

2: Not Doppler

Recommended by Brumas

"I am not a 'hardcore' gamer, so I find this gives enough variety without boring me," writes Brumas.

There's a range of rather brilliant free games on here, which should each divert you from work and your social life with their brief, lightweight delights. We're a bit addicted to Hungry Sumo (pictured below).

Hungry Sumo

3: Red vs Blue

Recommended by wolfie3000

"Usually if I'm bored I hop on over to Rooster Teeth's Red vs Blue site," writes wolfie3000. "It's one of the internet's funniest series."

Red vs Blue is an animation that's based on - and sort of satirises - the graphics, character models and conventions of the multiplayer shooting game Halo. There's nine series to get through, so if you've got time to burn (and a gamer's sense of humour) this is a good port of call.

Red vs Blue

4: Scrabble Zing

Recommended by Starfox

Ah, Scrabble. The smell of the dictionary, the feel of the canvas letter bag.

This is a single-player version of Scrabble, so there shouldn't be too many arguments. You have to score as many points as you can in five rounds, against the clock (although you'll be limited to a weedy two rounds until you register, for free). The letters in your tray completely reset each round, so don't bother holding on to that Q.

"Must have wasted hours and hours playing this," admits Starfox. Still, at least you've learnt some new words.

Scrabble Zing

5: Wellcome Collection

Recommended by fourm member

A classy suggestion, this one: the website of the Wellcome Collection, an exhibiting medical museum just down the road from PC Advisor towers.

Culture vulture fourm member praises the "quizzes, games and fascinating information. The information means it doesn't seem like just wasting time. Try the High Tea game to see how good you would have been as a 19th-century opium dealer."

5 more brilliant time-wasters on the next page! >>