A city-based entrepreneur, who tasted great success after a game developed by his company became wildly popular and topped a worldwide ranking for a brief period in 2019, is mulling to list his startup venture on the London Stock Exchange. Funcell Games and two other group companies created eight games that help the entity gain popularity in the US and the UK, the firm's promoter and CEO Abhishek Malpani said. "The flagship game of the company has been 'Idle Human' which topped the world ranking in the industry for seven consecutive days in August 2019 and is popular in the US, the UK, Australia and Canada. It still witnesses 20,000 downloads every day," he told PTI.