Did a handheld ever sell more then a bill software?.
I tought only the ps2 ever did that(and now ps4)
Nah, NDS did:
PS1 did 962M, PS2 did 1537M and PS3 did more than 999M (really weird number, who knows, maybe it surpassed the billion too):
I can't find X360 numbers but probably was close to 1B games sold too.