
Joypolis is billed as a 'virtual reality theme park'. My husband and I are not really into 'virtual reality', but we had two American teenagers in tow. We purchased two adult admission tickets for ourselves, and two passports for the kids. Admission tickets just get you in the door, after that, to ride anything, attraction tickets must be purchased separately. The passport includes all attractions.
I cannot comment on the attractions personally, as we did not pay to 'ride' any of them. So, I'll just give you a rundown on what to expect.
Joypolis is located on the 3rd, 4th, and 5th floors of one side of Decks. On the 5th floor, attractions such as 'Wild Wing', 'Wild Jungle Brothers', and 'Wild River Splash' are similar to Disney's 'Body Wars'. Your plane/truck/raft shakes and moves, but doesn't really go anywhere. The screens in front of you just make you think that they are. The kids thought these were pretty cool.

'Eragon' was a walk-through attraction, where you are a participant. This one got a thumbs down, too dorky. It was also only in Japanese. There were other walk-through attractions (Chakusin Ari Final - based on a horror movie, Fortune Forest,...) but these attractions are also only in Japanese so we skipped them.
On the 4th floor are large-sized video arcade games. In 'The Lost World Special' and 'The House of the Dead 4 Special', participants shoot at the video screen at zombies, dinosaurs,... These got a 'thumbs up'. Also on this floor were sports related 'video' games. 'Power Sled' simulated a bobsledding race and 'Burnout Running' simulated a track and field competition. On these attractions you compete against 3 other participants. I don't know if they were fun to do, but they were interesting to watch! Also on this floor are a variety of carnival style games, a Japanese only quiz game, regular video games, and more.
On the 3rd floor were some actual rides. The 'Spin Bullet', a spinning roller coaster, and the 'Half pipe Canyon', which claimed to test your snowboarding technique. The kids said the Spin Bullet was cool, but jerky and a bit painful. The line for the half pipe was too long, so we didn't try it. Also on this floor is a 'Sega Touring Car Championship Special' - where you feel as if you are competing in a race; 'Sky Cruising', another 'Body Wars' type ride in a hang glider, and a couple of attractions designed for smaller children ('Aquarena' - a virtual aquarium, and the 'Kyoryu-King Dino Theater'.
My feeling about Joypolis are mixed. If you have older children (10 to 18) and you can visit on a weekday while Japanese kids are at school, then do it! Especially if the weather outside is lousy. Our kids had a lot of fun, and they didn't have to wait very long for each attraction. On a busy day, Joypolis would be a waste of money. 'Sky Cruising', for example, holds only four people at a time. The ride takes forever. With any kind of crowd, you'd be in line for over an hour. Most of the other attractions are the same.
Also, the passport really pays off if you try to ride everything. Each attraction costs between 300 and 600 yen, and most of the 'good' ones are 600.
Admission Fees:
*Adult admission only: 500 yen, Children 7 to 14: 300 yen
*Adult unlimited passport: 3,300 yen, Children 3,100 yen
*Night passport (17:00 - 23:00): 2,300 for adults, 2,100 for children
Children aged 6 and under and those 60 and older can enter for free, but they must pay individually for attractions.
Re-entry is accepted on the day of purchase. So, if you are hungry, eat at the Japanese Pop Music Cafe inside, or you can go to one of the many restaurants in Decks and then return whenever you want.
Hours of Operation: 10:00 - 23:00 (last entry at 22:15)
Address: Sega Amusement Theme Park 'Tokyo Joypolis', 1-6-1 Daiba, Minato-ku, Tokyo
Phone: 03-5500-1801
To get there:
1) Take the Yurikamome line and get off at Odaiba Kaihin Park Station, it is a 2 minute walk from there.
2) Take the tokyo Rinkai Kousoku Tetsudo Rinkai Fuku Toshin Line and get off at Tokyo Teleport Station, it is a 5 minute walk from there.
3) By car - head to Odaiba and park in the Decks parking lot. I believe there is a parking discount if you show your parking ticket to the info desk in Joypolis.