Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How bright is it? Are 1800 lumens bright enough for a moderately dark room? (for gaming/movies)
Document: Now here are a fews (+) and (-) about this model:+ good picture quality, brightness and contrast. I know it's 1800 lumens, but very bright in a low light condition and acceptable  in a brighter condition (daytime with window blinds half closed). ECO mode is good enough. HD picture is high quality.+ light weight+ 2HDMI.
In fact, after hooking this to my computer and running a PowerPoint presentation through it, 1800 lumens might actually be a little too bright. So I'd say for movies, 1800 is just right, for static images, dial down the brightness a bit.Sound is acceptable through the unit, though I really suggest hooking up an alternate sound system.
The 2030 unit comes highly recommended on the projector forums, and has something few bulb projectors can claim: $99 replacement bulbs. Additionally bulbs are rated for 6000 hours in eco mode. I ended up buying the 2000 model because it was significantly cheaper (close to $300 with amazon discounts!) and since I planned to use it in a theater room, 1800 lumens is more than enough (even in 3d). Aside from being 200 lumens darker, the 2030 and 2000 are identical.
"Cinema" for movies in a dark room. "Natural" for general projecting in a dark room. 3D modes are "Dynamic" for bright rooms and "Cinema" for dark rooms. These settings really do help, so make sure you adjust it to your liking.If you are thinking about getting a new TV, consider this projector as an alternative. It is a great way to experience TV, movies, and games in a whole new way.
This thing is great. All the colors are bright  and vibrant and the black is black. I got this for my kids to be able to watch movies outside and this is perfect. You don't have to wait till dark to watch them also your screen doesn't have to be white we use a tan wall. I would highly recommend this to anyone looking for a outdoor movie projector.
their  no need of using this projector in normal mode ,eco mode is enough for darken room and it has true vibrant coloursblack levels are ok,they are negotiable when watching it in bright colours3d is also awesomeit sounds loud in normal mode but in eco very lessso over all it is the best projector for starters in high end levels and also very good price
Was easy to set up. Projecting on a 110in Da-Lite screen it is flawless to our eyes. The 3D with the Samsung SSG-4100GB 3D active Glasses is wonderful. I have a dedicated room with a dark maroon paint and poly'd hardwood floors so walls are pretty dark but the floors are bright and I run the projector in eco-mode. The reviews you hear about the fan being loud in other modes is correct.
The fan speed, thus noise, scales with the lumens so if you put it in cinema mode, 1400 lumens, it gets rather quiet. The heat output is enough to cook an egg but it's the same on all projectors.The big thing with projectors are the bulbs and replacement costs. The Home Cinema line use a new bulb that lasts 5000-6000 hours.
The colors were muddy, I couldn't get the picture very sharp and the black levels suffered greatly. On top of that, the only time that I could watch was after dark. I did assume that this was all because I wasn't using a proper screen. Once the screen was hung up, I could watch movies in the middle of the day. I docked one star because of the black levels.
I'm not really a technophile, so if you want an opinion comparing arcane specs...I'm not your guy. But I do know what works, and this projector works pretty darned well.I wanted something to use for outdoor movie night at my house, and this fits the bill quite nicely. It's light and compact enough that you don't feel like you're lugging around a movie theater projector, but it's powerful enough to make watching movies a joy.
Answer: It is more than bright enough for my moderately dark room.  In fact, I have set it to Eco mode to preserve lamp life (and reduce fan noise, which isn't that bad) and even at that reduced setting it is more than bright enough.