I am looking for a group of DirectX / Dosbox multiplayer games on gog

they need to be able to run on computer with Windows XP installed (computers had windows 98 pre-installed)
32Meg graphic card (no hardware acceleration)
small 10gb hard drives

I'm not sure what you mean by "DirectX / Dosbox". Do you mean "non-DirectX"? (DirectX is often a synecdoche for Direct3D, which performs notoriously poorly without hardware acceleration).

Descent is a good game to try. It was made for DOS, has good multiplayer, and is a fun game overall.

What kind of CPU/memory does your machine have?

P3 664Mhz
512MB
32MB graphics memory

Games I have test to date:
Dark Reign
Activision's battlezone

the commandos games should work fine not sure how active the multiplayer is.

the unreal tournament series aka unreal gold, unreal tournament goty should run fine but doubts on unreal 2004 ece which way better multiplayer popularity

dos games
blood
duke nukem 3d

generally any game released pre 2002 should run cause
if that graphics memory is the in built intel graphics then game choices are limited if its a seperate graphics card you have better chances