Gaming for charity seems to be getting popular. There’s going to be an event taking place today and it’s thanks to a team-up between OnLive and Extra Life.

OnLive’s 7th annual Game Day event will occur from 12:01am PST until 11:59pm PST today, and through it users of the service from the US, Canada and UK will be able to play any of OnLive’s 250+ PlayPack games which include such titles as Darksiders II, Batman: Arkham City and Saints Row the Third. An OnLive account is required to play, but signing up is free. Joining with the OnLive fundraising team means that your gaming will also be raising money for around 170 children’s charities too.

“Our hope is to rally awareness and participation for Extra Life in advance of their Game Day marathon by offering free gaming and multiple tiers of rewards to anyone who joins in and games for the cause.” says Jeff Woods, the OnLive Team’s captain.

And in case the charity aspect wasn’t enough to get you involved, there’ll be prizes and rewards for those who raise certain amounts of money. Raising $5 will get you a free month of OnLive and more rewards are available to those who raise $25, $50, $100, $200, $300 and $500, including more free months of OnLive and free games. Also, the top five participants will get a MadCatz microconsole and controller or a Wikipad gaming tablet.