I've been trying to download some games but they all say I need Powerpc. When I tried to download powerpc it said it didnt work on my computer. It's the OS X Lion 10.7.5
PowerPC is the processor architecture Apple used up until 2006 when they switched to Intel. You need Rosetta in order to run PPC software on X86 (Intel), which I believe was removed in either Mac OS X 10.6 or 10.7, so an operating system downgrade or used G4 machine is your best bet.
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