"He just arrived here and sat down and played with us," Mr Adams said.
Mr Adams said Mr Dotcom arrived around 10pm and stayed for five hours. Mr Dotcom matched all the donations to World Vision for an hour, and to generate donations invited the three highest donors to attend a gaming night at the Dotcom mansion.
After 24-hours of gaming the team are taking turns having a break and sleeping, but were thrilled to have Mr Dotcom as part of their mission, Mr Adams said.
Mr Adams said he was amazed that a tweet would get him along to the event
"We just thought he might retweet us and get the word out," Mr Adams said.
The Hunger Drive team are hoping to donate $10,000 to World Vision for their 40-hour gaming session.
People can watch the gaming online, join the conversation and be in to win spot prizes of gaming gear if they donate at hungerdrive.org/live