ChromaGun

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chromagun is a competent 1st-person puzzler where you mix colors to paint surfaces and droids to move them out of the way, open doors, etc. the presentation is very good, I liked the music and the narrator a lot. settings are okay, separate volume sliders, rebindable keys, etc. no fov or brightness sliders though, and not much to tweak the graphics with, but it runs well even on an old system. the 8 chapters with 58 levels should take maybe 5 or 6 hours.
what makes it only a cautious recommendation is basically the lack of the local equivalent of undo, coupled with no checkpoints or saving and a lot of timing elements, as these can turn a fun game into a chore of replaying sections to get to where you dared to make a mistake. each chapter has 6-9 levels, but your progress is only saved between them, though levels are relatively short, so a few restarts may or may not cause too much of an annoyance.
the game works like this (there are of course more complex situations later): paint a wall red, paint a droid red, droid goes to wall, so you can open the door it was blocking, or the droid will activate a pressure plate this way, so you can pass through the door yourself. you have red, yellow and blue, and can mix them to create further colors as necessary. if said surface (or droid) runs out of mixable colors, it turns black and nothing else can be done with it any more, and you might have to restart the level as well.
droids are mostly harmless initially, touching them is fine too, but once they're aggroed (either by default or after getting shot), they'll go after surfaces matching their own color, and if you're nearby, you as well, though walls within reach take priority.
there's no timer as such, except for a few hurry-up sections (and unless you're playing speedrun mode), so you can take your time to figure out what to do in most cases, but there's still a lot of timing involved, running around, being chased by droids out to get you until you can attach them to a wall, in a way that still lets you finish the level, not just save your own skin. there's no health bar, but you die after a few hits.
ideally, the game would drop a checkpoint after every room, or let you quicksave anytime, or maybe have an easy mode for this and normal mode for how the game works now. it wouldn't make the puzzles easier, just cut down on unnecessary tedium, repetition and frustration, and would add the fun of experimentation without having to re-do half the level again, no matter how short they are for the most part. and the new mechanic in chapter 8 could've used a better introduction than the first level there.
if you're jonesing for a 1st-person puzzler, there's a demo with the first 10 levels, that should give you some idea of what the game is like. it's certainly not bad, there are some clever puzzles, and if you're not bothered by the stuff I mentioned above, give it a shot. otherwise maybe think twice about it, though after I got over my initial frustration and familiarized myself with the mechanics, I enjoyed it more, except the actual against-the-clock sections, and if I can complete a game like this, anybody can.

ChromaGun was a lot of fun. I am pretty picky about puzzle games because I find most of the time they try to be overly complex bordering on pretentious. ChromaGun didn’t do that. I got stumped all of twice and was able to figure out how to proceed all on my own without guides or videos. The difficulty curve just felt well done as new types of puzzles are added often without any explanation, or with very little, yet they’re very intuitive and follow common sense. The humour is spot on and the person who voiced the overseer did a fantastic job. There isn’t much in the way of a story to ChromaGun but I didn’t really mind. The game has a great pace to it. Each room takes anywhere from 30 seconds to 5-10 minutes. Even if you don’t like the room you’re in it will be over pretty quickly and you’re on to the next one. I had only two major gripes with the game: one being that you couldn’t wipe colors and the other being a timed puzzle in the last level. The lack of ability to wipe away colors means that if you screw up you have to restart the room. This may not seem like a huge deal since the rooms don’t take a long amount of time to finish but it is still annoying and something that could have been avoided or fixed. As for that last level I wasn’t too angry. I hate timed missions on principle and I did have to restart the room multiple times trying to beat the clock but as I said before the inconvenience didn’t last long. The graphics are simple but well done. Most of the rooms are majority white so as to show off the colors of the paint but the droids are well done and the few bits of the game that has something to show off were good. There is good detail on fruit that is left on desks and the clothing on people for instance. The detail on peoples faces and on plants could have been better though.
I played ChromaGun on Linux. It never crashed on me at all. I didn’t notice any glitches or bugs. Alt-Tab didn’t work. It opened on the wrong monitor once but after that never did it again. The only graphics options are for resolution; motion blur; and a toggle for image effects. There is no manual save option. The game auto saves after each room is completed which works out well given the short time each room takes. I played version 2017.05.12 Build 120 of ChromaGun. It uses the Unity engine. It takes up 1104MB of disk space. During play my GPU usage was 27-66%; my VRAM usage was 797-900MB; my CPU usage was 2-21%; my RAM usage was 2.9-3.2GB and my framerate ranged from 71-126 FPS.
I recommend ChromaGun to anyone who enjoys games such as Portal. It lacks the story of Portal but the gameplay more than rises to the challenge. I finished the story mode in 4 hours and 40 minutes. I paid $13.99 CAD for the game and find that to be great value. Even $20 would have been worth it. There is a demo available that I implore people to try if you’re interested. The demo is Windows only but worked with Proton for me on Linux.
My Score: 8.5/10
My System:
AMD Ryzen 5 2600X | 16GB DDR4-3000 CL15 | MSI RX 580 8GB Gaming X | Mesa 19.3.4 | Samsung 850 Evo 250GB | Manjaro 19.0.0 | Mate 1.24 | Kernel 5.5.2-1-MANJARO

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A stylish puzzle game with mediocre puzzles.
The game involves painting walls to move colored balls. The balls kill you if they touch you, and they follow you if there are no painted walls near, which allows you to cheese (or sometimes entirely skip) some puzzles. The atmosphere is very clearly inspired by Portal, which isn't a bad thing. I didn't think any of the puzzles were particularly tricky, though I stopped playing about halfway through.
Overall, I'd say it deserves a neutral, but since that's not an option, I'll give a thumbs up for the fun atmosphere.

I recommend it, yes.
Only after you've played Portal, Portal 2, Talos Principle, Road to Gehena, Qube, and Qube 2.
So, after you've played all the good puzzle games, you can also play this more mediocre one.

I bought this game because I wanted to play something like Portal in this feels EXACTLY like Portal. It even adds something new to it in a way. Some levels are really appealing and nicely built. I didn't really struggle with any of it. Portal seems harder.
If you liked Portal then you'll like this.
Thumbs up to the developers. I enjoyed playing your game.

ChromaGun is a nice little puzzle game that some would say tries to replicate humor present in Portal, but ChromaGun focuses primarily on color blending and some quick thinking. It's an alright game, something I wouldn't necessarily rush to get but if you want something that isn't too hard of a puzzle game and somewhat witty, this might be a decent pick to get on sale.

Cool game.
But I don't think it worth the price tho, cause it's kinda short.
But there's still custom maps that you can download and play after you finish the game.