Card game amidst crash chaos
Conkers voted best game ever
Conkers has been voted the greatest playground game of all time.
Second place in the poll of 3,000 adults was the Rubik's Cube which has sold more than 300 million since 1979.
In third place was the yo-yo, which first became popular in the 1920s and made a resurgence in the 1990s.
Hopscotch, the oldest game in the top 20, was fourth. It originated in Britain early in the Roman Empire as a training exercise for foot soldiers.
The 1990s craze Pogs - a game involving decorated cardboard discs - is at number five.
A spokesman for Debenhams, which carried out the poll, said: "Playground memories are such a big part of our childhood and everyone can remember school breaks playing with the latest toy or game of the moment.
"Conkers are a classic school ground craze and every generation can reflect on happy memories collecting conkers and preparing them for playground contests.
"Having the latest trend is so important to kids and all the fads in the top ten all evoke fond times of hours spent playing with them."
Japanese cartoon Pokemon was voted in at number six followed by the classic game of Marbles. Tamagotchi - digital pets that need feeding, cleaning and putting to bed - came eighth.
Roller skating and skate-boarding completed the top ten. Other crazes to feature in the top 20 include the cult card game Top Trumps at number 12.
Dolphin speedboat makes a splash
A dolphin-inspired cross between a jetski and a submarine is the latest millionaire plaything making a big splash.
The Seabreacher can glide on top or below water at high speed - and it has enough power to soar out of the water and fly through the air and perform stunts.
The two-man £30,000 craft has been designed to mimic the shape of a dolphin and self-rights whenever it splashes down.
The mini-submarine has a top speed of 45mph over the surface of the water and half that when it dives under.
The 15ft fibre-glass machine can stay under for long periods as it has a snorkel that supplies air to its 1,500cc, 215hp marine engine.
Its Californian creators custom-build up to 20 of the crafts a year, mainly for the super-rich yachting market. Its see-through polycarbonate canopy is half-an-inch thick and is the same used on F-16 fighter jets.
Rob Innes, of design company Innespace, said: "You can drive it just like a boat with the canopy open at full speed of 45mph on the surface.
"It can do 20mph below the water. If you go below snorkel depth you run out of air for the engine and you stay under for 20 seconds before the craft will automatically surface. But with the snorkel system in use you can stay under for longer."