Some more games...
Tibia
Windows 95/98/ME/XP/2000 DirectX version 5.0 or later 10 MB on hard disk A connection to the internet. 500mhz
Mu
Pentium III 500 MHz equiv, 64MB RAM, 32 MB graphics card, Internet access, DirectX 8, sound card, 250 MB hard drive space.
Rakion
Windows 98, XP, 2000 DirectX 9.0c or above Pentium III 500Mhz 256 MB Direct3DSound Compatible
RF
CPU: Pentium 3 (450 MHz)
System Memory (RAM): 256MB
OS: Windows98
HDD free space: 2.0GB
DirectX: version 8.1 or higher
Internet connection: 56K Modem or higher
Video Card: Direct3D Compatible
Video Memory: 32MB or higher