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[Nindo]

I have a couple bones to pick with your Retro section.
Indie games should not be lumped in with retro games. Maybe I'm just a stickler, but indie games were not made in the same time period as retro games. While indie games do try to live up to what we all love about classic games, they also try to distinguish themselves in today's society. A game has to have been around a good amount of time for it to be retro. I know many people that like indie games because it is "the new thing", and they completely ignore the aspects of the game that try to seem retro. The fact of the matter is, retro things are supposed to have been culturally out-dated. The games of the past are just that, but indie games are the exact opposite becoming a cultural icon (see Scott Pilgrim). There is a very fine line between what is indie and what is retro, but there is one there, and I really think they should be separated in an article like this.

My second nitpick with it is that you have Castlevania: Symphony of the Night as one of the games of choice. Now, I know this is more of an opinion matter (as you said "Depending on how old the Retro Gamer is, what qualifies as old-school enough varies.") but also as you said

As a rule of thumb, if you play it on a cartridge, you're in the right era.

Then again this is all my opinion, and while I think retro gaming should be disconnected with indie gaming, I do like both retro games and indie games.