Thinking with Time Machine is a Portal 2 mod in which you will find and use a Time Machine to create a twin of yourself from the past to help you solve the puzzles. The past self accurately repeats all of the player's actions, creating a unique twist on familiar Portal game mechanics.
User reviews:
Recent:
Very Positive (28 reviews) - 100% of the 28 user reviews in the last 30 days are positive.
Overall:
Very Positive (3,112 reviews) - 83% of the 3,112 user reviews for this game are positive.
Release Date: Apr 18, 2014

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Community-Made Mod

This community-made mod requires that you own Portal 2 .

Click here to learn more about mods on Steam.

Install Thinking with Time Machine

Free Portal 2 Mod

 

Reviews

“Technically the ‘main feature’ in the Thinking with Time Machine mod is a time machine ..., which is great and all but look, LEGS.”
Rock, Paper, Shotgun

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About This Game

Deep within the facilities at Aperture Science lies a secret research laboratory that was locked and closed off... until it was found by robots.

Thinking with Time Machine is a Portal 2 mod in which you will find and use a Time Machine to create a twin of yourself from the past to help you solve the puzzles. The past self accurately repeats all of the player's actions, creating a unique twist on familiar Portal game mechanics.

Features

  • New and unique gameplay
  • Custom content (models, textures)
  • New design
  • Convenient and simple control in the form of a new datapad item
  • Different ways to think about and solve puzzles

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • OS: Windows 7 / Vista / XP
    • Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
    • Memory: 2 GB RAM
    • Graphics: Video card must be 128 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
    • DirectX: Version 9.0c
    • Storage: 4500 MB available space
    Minimum:
    • OS:
    • Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
    • Memory: 2 GB RAM
    • Graphics: Video card must be 128 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
    • Storage: 4500 MB available space
    Minimum:
    • Processor: 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
    • Memory: 2 GB RAM
    • Graphics: Video card must be 128 MB or more and should be a DirectX 9-compatible with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
    • Storage: 4500 MB available space
Customer reviews
Customer Review system updated! Learn more
Recent:
Very Positive (28 reviews)
Overall:
Very Positive (3,112 reviews)
Recently Posted
Red Bread
( 3.7 hrs on record )
Posted: May 25
it's a great game overall but there are some things i found kinda bad about it, such as no ending.

recommend it anyways, 8/10
Helpful? Yes No Funny
BrandenBOY
( 18.5 hrs on record )
Posted: May 24
Product received for free
HOI!! I think this is so cooool Because you get to use a time machine that will make a clone of you in the past and doing what you recorded. And it really feels like im playing with another person... ME!! <3 I GIVE THIS LIKE
Helpful? Yes No Funny
Gamer#1
( 2.3 hrs on record )
Posted: May 21
I like it, but wish it was a little longer and would have co-op support...also, I CAN SEE MY LEGS!!!
Helpful? Yes No Funny
CipherCraft618
( 1.4 hrs on record )
Posted: May 20
Product received for free
A short, fun game that plays around with a new concept. Overall, pretty fun.
Helpful? Yes No Funny
rafal.mo11
( 0.5 hrs on record )
Posted: May 20
Product received for free
I LOVE this mode to bits, it has an intresting puzzles with the new content that this mode has to offer.
it gives you more possibilites with the concept of the game.

i recommend this mode, if you like a bit of a challange with solving the puzzles

i will give this mode a rating 10/10
Helpful? Yes No Funny
Anathema
( 1.5 hrs on record )
Posted: May 17
Product received for free
den/den
Helpful? Yes No Funny
Link ツ
( 2.1 hrs on record )
Posted: May 17
Product received for free
This mod is for sure worth your time, the single player is great and has some great story elements that are prolly not canon but still great. It's really mind blowing when you figured out what you have to do and then plan it out and proceed with said plan, it's amazing, only bad things is that I got alot of crashes with it but there is a simple fix, just validate. That is the only problem but other then that it was really fun. Really short, but really fun.
Helpful? Yes No Funny
GeeKY
( 0.5 hrs on record )
Posted: May 16
I can think with my ♥♥♥♥ and still be succesful.
Helpful? Yes No Funny
Prokapus
( 2.9 hrs on record )
Posted: May 11
START

Step 1 : If you own Portal 2 goto STEP 4 else goto STEP 2.

Step 2 : BUY PORTAL 2 !

Step 3 : goto STEP 1.

Step 4 : PLAY THIS !!

STOP

|
|

HIGHLIGHTS
-----> FREE
------> Nice New Mechanics
-------> Great style and Aesthetics
-------->Short and Sweet Story
---------> Workshop
Helpful? Yes No Funny
the player ( * _*)
( 0.5 hrs on record )
Posted: May 8
sorry if my review is negative is that its a good mod but when i get to the second or third level the game just crashes i know my pc is ♥♥♥♥ just to tell you you need a really good computer and a good mind to play this game to the end ok have fun
Helpful? Yes No Funny
bijzaak
( 1.5 hrs on record )
Posted: May 6
Good, short (75 minutes for me) mod. The idea is nice: you press one button to record your movements and then press another button to see the "old you" play them back. The exact rules that apply to your clone is what takes half of the game to understand.
There is no voice over, but some cool graphics that go with the new mechanics.

Not a must-play, but it's a nice game if you want something new after Portal 2 and Portal Stories: Mel.
Helpful? Yes No Funny
LazerKill
( 4.8 hrs on record )
Posted: May 3
This mod is fun to play (and free so why not) but there are some problems :(
1) there are some lags, it's a little hard (at list to my computer) to run it...
2) it crashes every time at the end after the special thanks but there's nothing after it anyway xD
3) there are a few glitches with the time machine

But it's still fun and recommended!
Helpful? Yes No Funny
Drako Edor
( 2.0 hrs on record )
Posted: April 30
Really fun mod! My only complaint is that its short, and to have more fun with this mechanic you'd need to look at comunity maps... I'm not complaining, this is actually what us lonely people need! the ones without a friend p up we can finally play co-op maps by ourselfs! Speaking of, I kinda hope that someone takes some of the P2 co-op maps and re-does them so its possible with this mod!
Helpful? Yes No Funny
RK
( 1.0 hrs on record )
Posted: April 30
time travel has always been great
with portal it's even greater
Helpful? Yes No Funny
Warhand
( 1.5 hrs on record )
Posted: April 28
this reminds me of a flash game i played with a very similar idea, solve puzzles by performing an action, going back in time and using your previous actions to help you succeed, but when you combine that with the already fun mechanics of portal 2, you have a brilliant fan made set of unique and challenging levels, however i do have to mention a few of the later levels do become unreasonably difficult (at least for me) i do find that does not in any way stop this from being a great experience and to think it was made from another fan of portal 2 for no monetary reward simply to give other players a great portal 2 fan made bonus is brilliant.

i would reccomend this to anyone who played and enjoyed portal 2 and also a hearty thanks to the creator for a great free game.
Helpful? Yes No Funny
skibba
( 1.9 hrs on record )
Posted: April 28
Great Portal2-Mod. Once you get the idea of the game, you will have fun for about 1 hour. Especially I liked the occurrence of GLaDOS and the general makeup as a sequel.
Helpful? Yes No Funny
ImABotKiller
( 0.1 hrs on record )
Posted: April 27
The portal gun is not used enough and the gimmick of time travel is a bit glitchy.
Helpful? Yes No Funny
Alabaster
( 0.4 hrs on record )
Posted: April 17
Not something I would recommend.
Helpful? Yes No Funny
Most Helpful Reviews  In the past 30 days
2 of 2 people (100%) found this review helpful
Recommended
2.3 hrs on record
Posted: May 21
I like it, but wish it was a little longer and would have co-op support...also, I CAN SEE MY LEGS!!!
Was this review helpful? Yes No Funny
Most Helpful Reviews  In the past 90 days
4 of 4 people (100%) found this review helpful
Recommended
1.5 hrs on record
Posted: April 14
An interesting take on the Portal franchise, this community made mod offers an entirely new gameplay mechanic. The "time machine" isn't so much a "travel back in time" thing, but rather a sort of recorder. When you activate it, it begins recording your actions until you stop, and then you can replay the sequence, which will create a copy of you performing the actions you recorded. I must say that this is a great mechanic, and the puzzles built around it are pretty clever; I think they perfectly capture Portal's spirit of being tought to figure out, but easy to execute once you do. Even then, they're not all that complicated, so you won't end up stuck for a long time.

As for story, well, there isn't much. As the trailer shows, it takes place after Portal 2, and it pretty much involves you going through new test chambers. The story is more of a frame to have the puzzles built around. Personally, I'd have liked an original story from its creators, rather than dragging Chell back to Aperture once again.

A downside is the lenght; this mod is incredibly short (I finished in around an hour and a half), and, despite the puzzles being clever in their design, they're still pretty simple, especially as you become accustomed to the time machine mechanic. A complaint I've read in other reviews is the lack of portalable surfaces. While I admit I did find it a bit underwhelming, I think that, even as part of the Portal franchise, this mod's goal was different, and having too many portal puzzles would have diminished the impact of the new mechanic. That doesn't mean I can't see puzzles being made around both mechanics, and I believe that such puzzles could be even more complex and fun to solve.

To add another positive aspect, as this review seems pretty negative for my taste (and I do recommend this game), I must say the level design, that is, the aesthetics, not the puzzles themselves, is pretty good. It has a very unique feel to it, yet it still feels like something you'd find in the Portal universe. I must say the modders really did an excellent job in that regard.

Well, I think that's more than enough for this review. Thinking with Time Machine is, in my opinion, a recommendable game for any Portal fan, or for any lover of puzzle games in general.
Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
Recommended
2.1 hrs on record
Posted: March 19
awesome new way to bring back one of my favorite games! This mod adds a really cool aspect to this game.
Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
Recommended
1.1 hrs on record
Posted: March 2
so i love portal 2 A lot then i played this and it was hard so then i stop plaing but i am going to start to play it becuase i playing all the portal games/mods and i wanted to know if this is cannon or not but if you do know tell me i would love to know
Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
Recommended
2.3 hrs on record
Posted: April 15
This mod takes place from the end of Portal 2, that being said, it's (obviously) not true, since it's a mod. But that's not what the reviews about.
This brings Portal the ability to have a clone, but it acts by what you did in the recorded time. It adds the game a new element of solving by having a co-op type of puzzles to the game. It's a really great game. My personal problem is that it's flashy(?), it made the game get a too high-tech I can't specify on what it is that's bothering me about the looks. But that's just me.

I'd recommend it to people who wants a new type of testing.
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1 of 1 people (100%) found this review helpful
Recommended
10.4 hrs on record
Posted: April 8
This Game is Cool And I like that you can make more than 1 of you. Although











Wut do you need THE PORTALGUN FOR?!
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Most Helpful Reviews  In the past 180 days
9 of 9 people (100%) found this review helpful
Recommended
1.7 hrs on record
Posted: January 24
The Mod is certainly well made. No bugs or anything as far as I can see it.
The Time Travel mechanic is more like in "talos principle": you leave a copy of yourself that does stuff.
So I would definatly say you should play it. I mean it's free... so who wouldn't?

Problems with the game however:
- too short
- too repetitive
- too few actual "portal"
- too easy

The game is really short (Level wise) and really easy (if you have played any game with time copies). Instead of difficulty the levels offer alot of repetition. One in particular was annoying since you need to do the same reall long task twice even though you already have figured it out after the 1st one already. And lastly the Portal gun isn't acutally used that much. 80% of the levels dont even have portable surfaces.
Was this review helpful? Yes No Funny
9 of 10 people (90%) found this review helpful
1 person found this review funny
Recommended
2.7 hrs on record
Posted: February 25
Short version:
It's a free mod that adds a fun new gameplay mechanic, a whole new world of workshop levels, and nifty textures. No real downside here.

Long version:

Ok, I dove into TWTM knowing next to nothing about it.

Visual Stuff
The 1st thing I noticed was the new textures. I really like this about TWTM. The whole game gets a sleek new look, a nice break from what you've stared at for hours before. I don't know if you could see this in the original but here you get reflections on the floor. Your character model and all!

The cube delivery system got a gorgeous makeover for sure.

Yes you have a full visible character model. Since a main mechanic you use involves hoping onto your own back, it certainly helps seeing where your feet are at. However Chell's face still looks uncanny. Too artificial. That's not someone's normal expression.
Then again, your face doesn't affect the gameplay at all, so I'm not gonna be complaining.

However one thing someone pointed out and now I cannot unsee is how the Chell recordings' character models do not hold the time machine pad. Now that's really odd and looks like a slipup from the devs.

The main menu letters are quite hard to read due to the bg not contrasting at all with them. Seriously, this is one of the most basic design stuff: make what needs to be read easily readable.

The Time Machine Itself
This new mechanic was very well implemented overall. Simple commands and easy to check status. It felt like a natural addition. Didn't clog the screen and a lot of the time I didn't (couldn't) even see it, since you have to glance down to do so.

My only complaint is the apparent low processing power of the time-machine. Yes, you can record as long as you need (never got far after the 1min mark, have no idea of the "storage" it has) but good luck trying to be fast with it.
Say, you play a recording; it does the action you need; you want to record a new one right away. Nope, you can't do that. You have to wait ~2s for it to start recording again. This is a hindrance on a couple puzzles that involve almost perfect timing, making them less forgiving than what you'd expect.

Another thing that bummed me out in an unecessary strugle I mention ahead is the lack of spatial accuracy with the recordings. If you remove what they're standing upon, they'll hover in midair. Sometimes they get stuck in doors. Sometimes they manage to activate stuff you couldn't when recording and sometimes the opposite happens, to our great distress.
Most of the time you don't even really notice this, as the levels seem to have been made taking this into account.

Level Design
This is where things start going less well.

The tutorial was really good. The displays with the looping animations were a really imersive idea to teach you what was necessary in a quick simple way. You trained this or that mechanic and sped along, no problem.
I see some people complaining that they couldn't see/find those displays but I've no idea how you miss a big strange object with moving stuff on its surface like that.

I went through the levels fine enough until chamber 05. Now I got stuck there hard and for a very distasteful reason.
That chamber is not hard puzzle wise (none are) nor it has strict timing puzzles.
It does however implement an already known game mechanic, without any visual change, in a way that goes against your knowledge of Portal puzzles. Let me give you some detail:
You know those switches that only accept cubes? And the ones that only accept spheres? They were on the ceiling. Now I have no recollection of ever having seen such a thing in canon so I jumped to the obvious conclusion: I had to record myself holding the cube/sphere towards the the ceiling close enough to the switch so that it would activate. Not too hard if the time machine had any sense of accuracy with the holograms.
Frustrated by this whole ordeal, I looked up a guide and found out THAT THOSE ♥♥♥♥ING THINGS DEFY THE ♥♥♥♥ING LAWS OF GRAVITY HERE. WITH ZERO ♥♥♥♥ING INDICATION OF THAT.


Other than that the puzzles were quite repetitive. I often found myself wondering why I still held onto the portal gun since it was barely used and portal-able surfaces were a rare sight. Thankfully the workshop levels show much more promise on that aspect.

Story
Story?
Oh my.

It starts off well enough as a continuation of Portal 2 but falls short on keeping itself alive. There's a bit of dialogue but other than the ending, there's only one small area relevant to the, uhh, "plot". An area that seems forced nonetheless.

Don't play this for the story. Please.
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5 of 5 people (100%) found this review helpful
1 person found this review funny
Recommended
1.9 hrs on record
Posted: January 1
Short and pretty easy once you get the hang of it, but it's pretty god at wrinkling your brain until then. Enjoyed.
Was this review helpful? Yes No Funny
9 of 14 people (64%) found this review helpful
Recommended
5.8 hrs on record
Posted: December 4, 2015
The most mind breaking mod.

advantages:
1. Good puzzles.
2. New game mechanics.
3. Chellenging.
4. In Game Level Editor.
5. Long plot
6. Good map design
7. Workshop


Cons:
1. It was sometimes boaring


Final rating:
Mod is realy good but sometimes it looked like to much regular so it started to be boaring.
I rate 9.5/10

Thanks for reading.
Redstoncraft
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4 of 5 people (80%) found this review helpful
Recommended
0.9 hrs on record
Posted: December 22, 2015
It's a very good mod that takes off from the end of portal 2, so play portal 2 if you can before you play this
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9 of 15 people (60%) found this review helpful
Not Recommended
1.8 hrs on record
Posted: December 31, 2015
Thinking with Time-Machine introduces a new mechanic in which you can record yourself performing various actions and then replay your recording while you move on to do something else. Your past-recorded self can crouch down to give you a boost over a wall, open some portals for you, move blocks around... whatever you want.

The concept for this Portal 2 mod is fantastic, but sadly it's not well realized. The mod only comes with 9 levels, all of which are very easy, except for one in which you can get stuck in an un-winnable situation and have to restart. Fortunately, the team that developed this game were kind enough to include the Portal 2 workshop, so loyal fans around the world have created their own maps using the time-traveling mechanic. The player-made maps appear to far exceed the creativity of the original designers, meaning more challenging levels and more interesting puzzles to solve. I've played a handful of those and I will certainly play more.
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2 of 2 people (100%) found this review helpful
2 people found this review funny
Recommended
1.9 hrs on record
Posted: February 27
It's like Portal 3 but sadly it's not Portal 3 =(
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2 of 2 people (100%) found this review helpful
Recommended
5.3 hrs on record
Posted: February 12
Honestly very fun and creative. A little short but otherwise exceptional.
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2 of 2 people (100%) found this review helpful
Recommended
2.1 hrs on record
Posted: February 27
I found this to be pretty great, with:

-new game mechanics
-interesting plot
-great graphics
-puzzles that aren't too hard nor too easy
-builds on the Portal 2 story

there were a few problems, though. Firstly, it was very short. I would have enjoyed it much more if it were a bit longer. Secondly, while the plot seems interesting enough, it was slightly confusing, and would have been better if it were explained a little more. Thirdly, it doesn't use the portal gun much. I mean, I understand that this game/mod is called "Thinking with time machine" and not "Portal" but it would be nice if there were more than three puzzles that actually required the use of the portal gun.
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6 of 10 people (60%) found this review helpful
3 people found this review funny
Recommended
0.2 hrs on record
Posted: February 11
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Was this review helpful? Yes No Funny
1 of 1 people (100%) found this review helpful
Recommended
1.0 hrs on record
Posted: January 3
This is clever, and it is free, so I recommend it, but I have to say that it takes a little getting used to. The trailer looks very dynamic, with time clones handing off objects and performing other cooperative actions in real time. Unlike the cake, this is not a lie -- you can play this way, but until you are confident in the use of the time machine, you are more likely to be "taking turns" acting with your clone, which can be very repetitive and tedious.

This is a solid mod, but it requires more practice than Portal content usually does. You will get out of the mod what you put into it. Speedy thing goes in, speedy thing comes out.
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2 of 3 people (67%) found this review helpful
1 person found this review funny
Recommended
6.3 hrs on record
Posted: February 18
Positive
  • Fun to see a hologram of yourself solve the puzzles
  • Community test chambers
  • Okay puzzles
  • Interesting beginning.
  • Free to play (if you have Portal 2 though)

Negative
  • No proper instructions on how to record, stop recording and replay the hologram.
  • Too short
  • No ending? Not an exciting ending
  • Easy to solve

Overall, I had high expectations on this game based on the positive reviews this game receives. However, as the level progresses, the game falls flat and making the gaming experience not memorable. I would recommend this game if you want to experience and play with a hologram of yourself.
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6 of 12 people (50%) found this review helpful
1 person found this review funny
Not Recommended
0.7 hrs on record
Posted: January 11
This game has a good thing going with the new concept, but it's called Portal for a reason. You need to use your portal gun more to solve puzzles. I'd love to see a mix between the portal gun and the time travling.

Saddly, this game itself did not intrest me. It was very short and had no real story. Everytime I entered a test chamber, I felt like I was alone. The graphics could have been better for Portal.

Overall, the game has a great concept with the new time travling thing, but lacks into using both the portal gun and the time travling device together. This also has no real story and I felt alone through the way.
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1 of 2 people (50%) found this review helpful
Not Recommended
1.0 hrs on record
Posted: January 10
When you get the time machine it gets fustrating on how to use it. You have to time things perfect and some levels i got stuck on. It took longer than it did to get past any levels.
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