While judging a book by its cover and a game by its graphics is not recommended, it's hard not to. It's just human nature. This is an unfortunate reality for Circix as while its graphics are nothing special, the puzzle side of things are much more deserving of your attention.
Like all good puzzle games, Circix is very simple to learn. Each level consists of a series of chips that must be connected together to create a circuit. Each chip has a number assigned to it and it must have that number of connections to other chips in order to pass the level. Early on most chips only have 1 or 2 connections, which makes it pretty easy to figure out. With the inclusion of intermediate and advanced packs though, things get much tougher with the likes of 7 or 8 connections being required. These puzzles also add the potential for double or triple connections, further adding to the options that can be taken when solving a puzzle.
Circix does a great job of easing you in. There's plenty of time to get to grips with the format, and unlike many other games, it's always possible to skip ahead to a different level. Everything is unlocked from the start. I found it quite satisfying to complete a few easy levels to ease myself in, then leap over to a much harder one then back again. The addition of a speed-based round is a neat touch too, for those wanting to be extra competitive.
The only real problem with Circix is its aesthetics. It really doesn't look that great. It's functional and intuitive with colors changing depending on how many connections have been made, but it still looks rough around the edges. The lack of Game Center support is a shame, too.
As a purist's gaming experience though, Circix scratches that itch well. It's an interesting and entertaining set of logic puzzles that are sure to draw you in for a while.