There's a spot of dependency trouble when you attempt this...
[code:1]# rpm -e --test kdegames
error: Failed dependencies:
libatlantic.so.1 is needed by (installed) kdeaddons-3.1.3-0.9x.1
libatlantikui.so.1 is needed by (installed) kdeaddons-3.1.3-0.9x.1
libkdegames.so.1 is needed by (installed) kdeaddons-3.1.3-0.9x.1
[/code:1]
However forcing it to remove shouldn't cause any problems unless you want to use atlantikdesigner from kdeaddons.
[code:1]# rpm -e --nodeps kdegames[/code:1]