What to play on slower PCs?

Not old, but only old. 2 gig of Opera is very rigid.
TES3, TES4, Fallout 1-3(3 will slow down, Vegas - specifically braking), Silent Hunter 3-4, Gothic 1-2, maybe 3, but it is in itself not a cake, Soldiers of Anarchy, Silent Storm, Heroes of the fifth, NFS up to MW, Spellforce 1-2, Sacred 1-2, X2-X3, Turgor and pestilence.Utopia, Eureka, Arx Fatalis, Darkstar One, Freelancer...well, there are many, but all old, some very old. Go to old-games.ru to read reviews, there are thousands of games for the buckets of varying degrees of duravest. Can look in the direction of indie on RPG-maker, and in the direction of visual novels and ports from the old consoles, like Grandia 2 and Legend of Heroes.
The ceiling of such a system...the crisis in the middle, as I recall. A fps is better not to look, not to worry, but you can go. In principle, and the second Halva pass, should work fine.

requiemmm
Don't know how, but TES5 I have is playable (how many fps I do not know), Gothic 3 on medium-high with an unstable 60 fps, Crisis 2 a couple of years ago was a normal fps, but I can't remember what your settings were, NFS Hot Pursuit was not even bad, GTA 4 on low 30 to 60 fps, tomb raider now pass on medium-low (all mines except textures they are on medium), in the unloaded areas stable 60 fps. Almost all games until 2011, my PC pulls. So you're slightly underestimating my PC.

I launched Skyrim, I drove the truck, went to Riverwood and saw that he ate two gig operatives. And therefore did not mention it, to play without mods and end-to-end requirements is not much fun.
I had a similar config(and now in a landfill somewhere), so I remember this constantly ending memory, began at once friezes and had to reenter the game. Added the bar to three and already feel better. However, GTA 4 is there specifically inhibited, and then I was not interested in can fixed. Dead Space the first was normal, without serious brakes. One of the Tambov raiders, 2007, like, too retarded, and late I was not interested.
But Lost Planet is not even frisel, it just had everything slowed down like in the Matrix. There seems to be such a cheat way to get bosses to slow things down CPU killer system. There and braking was not necessary, eternal deceleration time during all the battles:) Wolfenstein 2009 basically worked well, but occasionally frazil can try.

half life, warcraft, gta 3,vc,sa, colin mcrae rally, nfs underground 1,2, 1,2 flatout , farcry, call of duty 1,2, doom 3, wolfenstein, alone in the dark, quake 3,4 there is still a lot of good old games

Suggest the Prince of Persia pass, great game, and all the parts. And the requirements are quite modest.

I don't remember much of what games I play on my weak PC.. I Remember playing Unreal Tournament, FIFA 11 gameranger, GTA SA and all of Quake 1-3.. XS in any there..) And piggy recommend to change at least a seven.

F0rests
Legendary Unreal Tournament already advised, you can add the first Call of Duty and Renegade - will fly. Gothic 1 and 2 have already been advised, you can add Morrowind. Praetorians Gallakticheskom Empire 2, Dune 2000, Red Alert 2 , Tiberian Sun, Rome Total War and of course the legendary old Age of Empires 2, if you are fond of strategies

F0rests
Dark Messiah of Might & Magic good pull! See there is a lot of good strategies wrote. Then the Emperor Battle for Dune I mean ;) And as without the Command & Conquer with their Generals and Generals ZERO Hour... where you can hang out for hours!

I, too, after 2015 has become quite difficult to choose toys, especially since new games were more likely to require DX11 which is not supported GF9800. But, it is still possible to choose entertaining games.
For example:
SteinsGate
The longest Journey
Remember11
Space Ranger
Ys origin
The Legend of Heroes: Trails in the Sky
Now playing:
To the moon

Advise the game Medal of Honor: Airborne is a pleasant shooter, he recently pereproshel when sitting without a video card.
You can play Tom Clancy's Rainbow Six Lockdown is also a good game shooting, is not very demanding.

Guys the same problem but Rpgshki love with shooter elements. Advise except Grigorovich and Besedovsky 10 times parohody.

Obvious Deus Ex over? You can even Vampire: The Masquerade – Bloodlines, bought weapons and ammo and you have a shooter, the last third of the game quite a from the trunk takes place, even in places more convenient than waving a sword. There was still a fun spy Thriller, though it is not an RPG. NOLF, No one lives forever. If absolutely a pipe, you can try Xenus. It should be noted that it would be much better if there were no RPG elements, it would be a GTA first-person. But we were playing at the time, kill 100,500 soldiers and bleed skill barrel on unity:)
There was also Alpha Protocol. Good idea, crashed on the implementation of crooked hands.