Petr QuoThe Seven Constants Of Game Design, Part Twoverified_publisherTechCrunch - Tadhg KellyEditor’s note: Tadhg Kelly writes a regular column about all things video game for TechCrunch. He is a games industry consultant, freelance designer and the creator of leading design blog What Games Are. You can follow him on Twitter here. Last week I discussed how video games are both unbounded and …