Turn on the light

Finished in around 45min, only the last three to four levels are challeging, the rest is kinda meh. No save function (had to redo 90% of one level bc of that).

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edit: some absolutely basic functionality (like a way to properly quit the game) finally got patched in, so I edited relevant parts of the review and turned it into a recommendation, but it still needs some work.
turn on the light is an electricity-based puzzler, all you need to do is connect the switch to the bulb. if there are numbers, follow that order, and if there are more layers to the puzzle, there will be an indicator on top. left click to zoom in on that section, do what's necessary, right click to zoom out. ideally, that indicator would show all the different subsections instead of the number of layers, and clicking them would bring them up.
clicking the wire in two places shows if there's electricity there, pretty organic way of testing a circuit, and there are switches adding a certain amount of 'line' and you have to figure out which to press and how many times to make a seemless connection (trial & error, such fun), plus other switches that act kinda like lights out (another non-favorite of mine), and other stuff like magnetic switches that are finicky to rotate due to their magnetic nature, and rotation is only possible in one direction, of course. hated these.
40 levels with multiple circuits in most, doesn't even take an hour and it gets a bit tedious towards the end, but after a few patches minimalist doesn't equal absolutely lazy anymore. still only an audio on/off button, no volume settings, but there is proper level selection now, as well as a way to quit the game without resorting to alt+f4, and they're available from any level, mostly because there's no main menu as such.
windowed mode is available with alt+enter, the window is resizable now, but going back to full screen doesn't restore the game to the monitor's resolution, so depending on window size, you might end up with black lines on the side.
the game itself was already fine, the price is right too, and with some necessities patched in, I can now recommend giving it a shot. hopefully, the developer learned from this and they'll make their next game with at least basic functionality in mind.

This is a straightforward puzzle game, appropriate for relaxing while playing. There are no time limits or pressure of any kind; most puzzles, even the more complex ones later in the game, can be solved pretty easily with just a little patience and foresight. The game adds multiple new concepts as it goes, but the biggest complications come from simply combining all of the concepts it introduces, including a sort-of recursive trick of having to drill in to some areas to solve them, rolling back out to the top level, where the one bit of the puzzle that represents a lot of other solving now fits in with the rest of the system.
It's cheap, it's a good time, and it doesn't overstay its welcome. Honestly, I could've used a few more levels, but I'm happier with enough properly-designed and focused ones, rather than a bunch of repetitive, grindy-just-to-artificially-lengthen-things levels.
Thumbs-up.

6/10
Simple puzzle game about building circuits to turn on lights.
What is it: A puzzle game about toggling different parts to make a continuous circuit from the light switch to the light bulb. There is a large variety of puzzle elements, including simple rotating pieces, polarized connections that can not be rotated if opposite polarity connections would touch, two "find the correct button sequence" minipuzzles, nodes that must be activated in the correct order, and a few others. The extra layer of complexity comes from the fact that the levels are nested, instead of a simple toggle between two wires, there's a whole box that you can zoom into, with a circuit to solve in it, and this can go up to four levels deep.
This is the first game in the "turn on the lights" series, with much more puzzle elements thrown in just to see what would stick. The following games streamlined the gameplay, removing some of the elements, refining others, for a more polished gameplay. With only 40 levels, and so many puzzle elements to play with, I feel that the game is much too short, a new mechanic is added and explored for just 4-5 levels before the next one is thrown in, and they all feel like introductory tutorial levels. When all the elements are finally present, the game has just a handful of challenging levels before it is all over, feeling like a teaser of what the game could be.
How hard is it: Obvious to moderate. Only the last few levels actually pose a bit of a challenge. This is not a serious brain challenge, but a family-friendly relaxing game.
How long is it: 40 levels, for a total of 30-45 minutes of playtime.
Level design: Meh. Most levels are obvious, Many times there are a bunch of nested boxes with just one switch to rotate, adding needless "complexity" that does nothing for the puzzle complexity other than increasing the number of clicks.
Quality: Clean design, easy controls, nothing to complain for this type of game.
Worth the price: Yes, especially on a sale.
Most positive aspect for me: The deeply nested levels, when used properly. Sometimes they are just used as a "go deeper to click on one thing" gimmick with nothing to solve in there.
Most negative aspect for me: The level design isn't challenging enough.
Also consider:

Turn on the Light is probably one of the shortest games I've ever played and it was very enjoyable.
Forty levels of pure puzzles solving fun. The premise is quite simple. Correctly wire the switch to the light and turn it on, that's it. Although this is much easier said than done, given the amounts of elements the player is forced to use.
At the time of this review, Turn on the Light was selling for 99 cents. I highly recommend it although you'll most likely finish within 45 minutes, but it's so much fun.

Reasons to get/avoid:
Get:
- Calm - A logical game about turning on a lightswitch, and honestly, it was so perfect. I genuinely loved every moment
- Easy(ish) achievements. - If you're an achievement hunter like myself, then this game is a 'turn on', get it? like a light switch? because... you turn on switches? no? okay... nevermind.
- Graphics - Super simple but easy to understand.
- Sound/Music - It's super relaxing and quite calming
- Price - VERY cheap. 100% worth £0.39 (I got it on sale haha)
Avoid?:
- Gameplay - Not much to say as the gameplay is super simple, but I wish it would explain to you what certain things were. Took me about 10 minutes to work out what the power pack did. Would be nice to have a small indication or even a quick 2-minute tutorial on it all.
- Gameplay 2.0 - I really wish there was more to it. I completed all 50 levels in 53 minutes and was dying to see it progress. Dev, If you ever read this review, I really hope you add more levels because I would happily pay to play it more.
All in all, a Solid 8/10 . I love puzzle games and this ticked every box.
-Please bear in mind, this is my personal opinion and others will disagree-

This is a great way to spend a dollar. It's a medium-level puzzler with 40 levels. There are various ways of completing a circuit, and some levels are a half-dozen puzzles combined. Takes about an hour to play the whole thing, but I fell asleep on the couch listening to the music.