Altitude is the perfect game for netbooks

It was a toss up between me buying World of Goo and Altitude, but I ended up going for the replay value (I usually do). 
 
If you own a netbook, Altitude should be the first game you toss on there. <500 megs install, no mouse necessary (the mousepad on my netbook is terrible). Really low system requirements, yet the game looks and plays great. 
 
Someone on the Bombcast mentioned that Altitude wasn't "15$ good". I'll probably agree, but Steam's got it half off this week! $7.50 for a good online game packed with some Infantry/Subspace nostalgia, right here. 
 
Got any other suggestions, by the way? I'm looking for a keyboard-heavy RPG for this thing, too. 
 
PS: Just got Red Faction Guerrilla for 10$ today! Two thumbs up for Steam.