Houseparty - Brining empathy to online communication.
X-COM - X-COM is a Science-Fiction, Turn-base Tactics, Strategy and Single-player video game series developed by Mythos Games and published by MicroPose.
Booyah - Video chat with up to 12 friends at the same time.
Xenonauts - Xenonauts attracts greatly on the sci-fi universe of the original X-COM to make a very familiar turn based tactical adventure.
Airtime - Hang out with group video, share music & videos
Jagged Alliance 2 - Jagged Alliance 2 is one of the older tactical role playing games.