Nodes is a pretty uninspired puzzle game. Well, it's actually not a bad idea, but the implementation is pretty poor. With better level design and some less annoying features, it could be a decent game, but as it is, it's not so great. And, just for the record, I played the game (and developed these opinions) before noticing that it's by the same developer as Draw-Play 2 (review here), which might explain it. It's nowhere near as unpleasant as Draw-Play 2, fortunately, but it does have some of the same problems.
Anyway, the premise of the game is very simple. You have some red nodes, and lasers connecting the nodes. There are also some circles on the board (which the game also calls "nodes" sometime, confusingly enough, so I'll just call them "circles"). Your object is to position the nodes so that the lasers light up all of the circles. Some levels feature nodes which can't be moved, but generally you can move everything freely.
The fundamental problem with Nodes is that the puzzles just aren't very interesting. There's nothing which requires a lot of cleverness, or particularly careful thinking, or indeed is very difficult at all -- if one of the puzzles takes you longer than a minute, you're probably doing something horribly wrong. The game doesn't have a save feature, annoyingly, so you'll have to complete all 20 levels in one go, but fortunately this still won't take you very long. There's also a normal and a hard mode; the only difference that I can see in the hard mode is that you have a time limit of 60 seconds for each level, which, as I mentioned earlier, shouldn't be a problem. Fortunately, you only have to do normal mode to get the badge.
The graphics are OK, but nothing special. The music is really quite irritating; it's maybe a 20-second loop at most, and it's a very annoying 20 seconds. The sound effects also kind of grate. Overall, with better design Nodes could be a decent game, but as it is, it's just not particularly much fun to play.