One more point to add into the article's content, from my experience:
Playing several non-tablet-specific games when you are on the go is possible with a Tablet PC, particularly, my Toshiba Portege M205-S810 (M200 series).
When I am commuting in the Metrorail, I can flip it into the tablet mode, and play the games without the need for an extra space for a mouse.
In RTS games, I hold the little joystick with my thumb to scroll the map, and program the pen-buttons to grouping units and selecting groups. Works like magic!
Point-and-click adventures is another genre that excels on the Tablet PC (for the obvious reason).
Now, I am playing games that I could not play to finish when it was their time, and finishing them during my commute! I already finished the original Full-Throttle and Sam&Max (and what a timing, new series is just being released), and still going on Sartcraft Protoss Campaign (I only had time to finish Marines when the game came out). I can also go through WarcraftIII replays of our online games that we play on the weekends, to learn from our mistakes
I love my tablet! I'm looking forward to getting a new one (Core2 Duo?
), but M205 is so well designed (or it fits my needs so well), that it looks like no other design will do (even in the new toshiba tablet M400, the changes they made in design, such as moving the joystick to the left (or bottom when folded), don't make any sense to me).
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GT