These video game tablets offer multiplayer experiences for up to four players with touch screen interactivity.

FORBES: Move up http://i.forbesimg.com t Move down

Free-to-play is on the rise across the video game industry, but especially in multiplayer-based online games.

FORBES: As 'World Of Warcraft' Bleeds Subscribers, Free-To-Play Is Already Winning The Future

The LEGO Group is the latest video game publisher to venture into this free-to-play business with its LEGO Universe massively multiplayer online (MMO) game.

FORBES: LEGO Universe Latest Online Game to Adopt Free-to-Play Business Model