This game is an absolute requirement if you're a fan of the portal series!
They have incredible story that not only would fit with the timeline, but also references and well thought through backstories and lore of their own. It is so easy to get immersed that the game flew by and left me craving more!
The level design and progression was extraordinary, with inventive ways to use existing or new creations.
You could really tell how much love was put into this game, so much in fact that I wish valve would allow them to make portal 3.
Lastly, I want to give my appreciation to the voice actors who did such an breathtaking job, and also the writers that made it so fun to hear the NCP's conversing.
I love you all, and I so grateful for all the work you put into making this game. It was an absolute dream!

Most re-playable game I have ever tried.

Awesome game, played it no stop on Xbox one when first released then got it for pc when that came out and I haven't been disappointed. Even now it's still amazing and coming from someone who sweats dead by daylight this is much better due to how much more action you can get plus the games free so there no reason not to play it. I will forever love this game :)

2017: Loved this game since day 1 and it keeps getting better, as an horror fan I can honestly say it's one of the best horror games ever made. It's had it's ups and downs but they listen to the community all the way. This game deserves the attention it gets and will continue to! Thanks for an awesome game :D

Edit 2022: it is now trash/ crossplay.

Edit 2024: It gotten a bit better, though the community will never recover from crossplay. The developers have become a lot more greedy and require you spend money if you want things you could once get with a bit of grinding.

I have played this game for a very long time now, but about a year ago i stoped playing for big reason, from the years i was playingi wanted to save up for a rare hat which with a calculator needed 243 items to do so, because i didn't buys anything it took me years of sacrificing the best things i got, and after all of this hard work you wanna guess what i got.....a ♥♥♥♥♥♥♥ mustache which i hate so the game really ♥♥♥♥♥♥ me over thanks a lot =/ im disappointed in this

this game needs to be sorted it out, this is because of the stupid glitches online where if someone randomly disconects they cannot join back unlike the online virson and where you are about to finish the map when it says gameover even though there were not any bloons on the screem,please sort it out