Old games for a old computer :D

I posted this in PowerPc forum but I wasn't getting any answers... sooo!

I was wondering if there are any games that will run on my powerpc PowerMac 350Mhz 700ish gb of ram 6gb hdd.

The powermac is my brothers. So I need some games that are stradegy or shooting... like age of empires or something.

Thanks in advance,
RaindropDress