Better try and find some friends this week for Deal of the Week from June 26 to July 2 has a multiplayer theme and sees up to 75% off some great XBLA titles:

Plenty of multiplayer action to keep you entertained until Summer of Arcade then. If you're getting low on points you can always stock up at Amazon they've always got them for a great price. As always Deal of the Week is for those with a Gold Membership only.