I recently started to play Fallout 1 on my EEE PC 900 with high-res patch and update 1.3. Works fine so far. Now I wonder, which other games would be playable. Any suggestions?

After looking at the requirements for Fallout and some of the rest of the GOG catalog, I'd say you could probably play most of the games GOG is currently offering. I don't have a netbook myself, but it's great that these games can be played on them!

Obviously the first thing to do is to look at the system specs on your notebook. No point in guessing then getting it wrong is there?

As most netbooks now are using Intel Atom CPUs with GMA 950 integated graphics(besides HP Mini Note 2133 or the 1st EEE netbook), you should be able to play most games that are 6 or more years old.
GMA 950 still runs Sacrifice well on a Core 2 Duo @ 2.16ghz.
I reckon the Atom CPU at 1.6ghz is the real bottleneck here, followed by the GMA950(if it a 3D game).
If the game minimun requirements is like(for eg: a Pentium 3 1ghz, Geforce 2 or Radeon 7000/7500) I think it should still run fine.
You might have to allocate some more swap file memory for WinXP as some older games dun run without enough swap file memory.
The dell mini inspiron that I played with before has 1 GB of main memory, but only 256mb of swap file memory allocated by default. Which is way to little (I had to change it to 512mb to do decent multitasking in windows).

I own the Acer AspireOne netbook.
There's actually not many games you can run on it. Any game that requires hardware transform and lighting will either be unplayable or won't even run.
So far, these are the games I play on mines:
- Starcraft (and Brood War)
- Red Alert
- Red Alert 2
- Freelancer (barely playable)
- Jedi Academy (unbearable in multiplayer)
- Freespace (somewhat choppy in a firefight)
- Star Trek: Armada (can get choppy with a lot of ships)
These just aren't playable in the slightest
- Freespace 2 (launches and instantly crashes to desktop)
- UrbanTerror (2-9 fps in multiplayer)
- Combat Arms (fails to run due to lack of Hardware T&L)
- Blackshot (same as above)
- Warrock (same as above)
Original War is probably playable on a netbook, but I haven't purchased it yet, so I haven't tried.

i recommend getting castles 1+2 from GoG, and the fallout series.
also, if you like shooters you cant pass SHOGO, and it should run on your eeepc i believe.
beyond that, anything that was made around the lower 2000's and below should be good.
cheers.
edit: if your under linux check the wine APP database before getting any game to see if it will run.
or if you got the cash, check codeweaver's crossover. ;)

More like, you can't pass Redneck Rampage, am I right? hehehe.

Sorry, my post was a bit unclear. I really meant what games would you like to play on a netbook.
Fallout works pretty well, I'm enjoying it a lot when I'm in the train on the way to work. At the moment my EEEPC is like a giant Nintendo DS to me (well, without the touchscreen, altough I know it's possible.)

You'd do well to look in the Fallout topic forums, there's a handful of people there who have been using wine.

I would assume anything before 2000 should work without glitch and most games from 2001 and 2002 still should work fine.
The bottleneck is not CPU. 1Ghz is pretty high. it is the graphics card.
So any game before GeForce became mainstream should run perfectly.
Lucasarts adventure games (including GF)
Half Life 1 and expansions (it run on low res. on my friends 133Mhz Pentium and run perfectly in 800x600 on my beast: 233Mhz Pentium MX)
Carmageddon 1 and 2
MDK
Die By sword
Most likely Gothic
That's my opinion. Don't have netbook. :)

Ah, yes, also Duke Nukem 3D with the resolution patch should work as well.

I know it's not an official GOG (yet! *hope hope*), I've been playing Baldur's Gate 2 on my lunch breaks at Starbucks. Widescreen mod == Awesome.The tricky bit is getting the damned thing installed without a CDROM drive.
And yes, 3D games are a painful experience with this laptop, I've yet to try anything too difficult, but Eve online laughs at the system specs, and the Penny Arcade adventure game played like a slideshow.

Infidel!! Duke3D vanilla forever!!
Aside from that, I think that all UMPC need to add 1Gb RAM, and a OS like TinyXP (although it's illegal). I've been playing Icewind Dale 2 in a Medion Akoya mini e1210 (a clone of the MSI Wind) and it work flawless.

anything 2d or before 3d accelerators (1997) ;-)