Designing and implementing a good, reliable camera system for your game is tricky business.
Tailoring it to fit the unique peccadilloes of your side-scroller is even trickier, and it's something that indie game designer and Mushroom 11 creator Itay Keren has spent a lot of time studying.
As part of GDC 2015's Indie Summit, Keren explored the camera techniques used in classic side-scrollers of the '80s through the indie games of today, demonstrating how camera work can (and should) be tailored to complement a game's unique mechanics and characteristics.
It's a fascinating and in-depth look at something most people never think twice about, and it's absolutely worth your time to watch in full (for free!) over on the official GDC YouTube channel.
You can also read the blog version of this talk here.
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