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After the augmented reality mobile game's release last week, shares jumped 10 percent overnight . This rise has continued, and according to the BBC , stock price is now 70 percent higher than it was before Pokemon Go's launch.Nintendo's market value is now £19.6 billion (~$26.2 billion), compared to £13 billion last week. This is the biggest share price jump the company has seen since 1989 when the company released Dragon Quest in the US, and that was just around a 35 percent increase. This is all despite the fact that Nintendo is only a part-owner of publisher, The Pokemon Company, and not directly involved with the publishing or development of the app like Niantic and The Pokemon Company were.Pokemon Go has been out for a week in many territories, and it finally came to the UK on iOS and Android yesterday.There's plenty of Pokemon news here on IGN, such as how developer Niantic is taking requests for new gyms and Pokestops, and how T-Mobile is offering a year of free data to players.If you want to know how good the actual game is, IGN's review says "what Pokemon Go lacks in polish and depth, it makes up for with a fascinating social experience."

Matt Porter is a freelance writer based in London. Make sure to visit what he thinks is the best website in the world , but is actually just his Twitter page