A good minigame! The camera could be zoomed out a bit more, and the music was also a bit on the lower side. But other than that, a really solid game. 

Adorable cubess!!!! Had a lot of fun playing through each level and learning the mechanics of the game!! The only real issue I had is that the difficulty is a bit hard at the start mainly due to needing pre-existing knowledge of platforming games beforehand and the camera not being able to see a lot of obstacles, unless it is intentionally a trial and error kind of game? 

Great game, really well made and felt polished. My only problem is that sometimes I couldnt see platforms off-screen but after a bit of trial and error it was fine. Nice work.

Great game, I loved it

Nice little platformer game, the player movement and collisions are not the best but are decent and the idea of using other cubes to help you is really cool.

Awesome game that was fun and challenging. I thought that the swapping between cubes and them having special capabilities was a really nice and fun idea and fits nicely within the theme. Also, I think the graphics and the visual effects (like the trail) were great. 

I will mention a few things I noticed while playing. There were times where I did get stuck inside a platform if I jump to the bottom of it from a certain angle. Also, the audio messes up if I reset the game in the menu (sounds like multiples of it are being played on top of each other).

Other than that though (which are all mostly polish related things), this was a great game!

Good submission, I enjoyed playing it and I think it feels and looks really nice.

I like the variety of the cubes, and them different from each other with their mechanics. It adds depth on this regard you nailed it.

The only complaint I'd have is the same as what others wrote it - the difficulty curve seems a bit high, I was too stuck quite a bit on level 1, and even after from time to time it seemed like I had to nail a perfect jump/wall stick to get through.

Besides that, I really liked it, well done :)

Cool idea! With a little bit of polishing, this might be a very cool game! Good job!

The concept is really cool, changing and working cooperatively with the cubes is very interesting.

A few more of these (when you jump, die etc...) would be a plus for the game experience.

Good job!

Really cool idea to have different characters you can swap between to progress through the levels! :) I had a fun time playing your game, nice job!! :D

Fun game! Really well done, I liked the overall feel. 

I agree that the difficulty curve at the beginning is a bit high, it took me way too long to get over that first wall, lol. I would also say that I instinctively wanted to press space bar to jump rather than using up arrow/W, which probably didn't help me with trying to get up the wall.

Great job, it's an awesome game, and really amazing how well put together it feels with the short time you have in game jams!

very nice job.  I love the Metroid theme layout, the visuals, the different abilities of each character, and just the over all feel.

The only points of improvement I have are that your difficultly curve is pretty much a vertical wall requiring pin point accuracy on level 1, so just build in some tolerance for mistakes and you should be good.  This is more of a suggestion, but I would also advise tweaking the hang time and speed of the other cubes to really give them a distinct personality.  

Otherwise well done, would recommend!

Really nice game! Graphics are simple and effective (i really like the rift design), i like the idea of various cube effect you can switch to! overall great game!

I Love This Game So Much It is Great Game

Semi-on-the-fly remarks:

1. This reminds me of Super Meat Boy, where you can actually unlock other characters, each with their own special abilities.
   ‘My game fits the theme of "You are not alone" by having multiple, unique characters controlled by the main player. This fits the theme as in most puzzle platformers you play as one character the entire game.’
   ‘Each character has unique traits eg. Double Jump or Wall Stick’
2. Game jam page: apparently, there is a misprint, as you lack the music!
   ‘The bg music from here: .’
   (Written below the YouTube walkthrough: Maze by Density & Time.)
3. Apparently, level selection only allows you to choose those levels you have already unlocked; although I read you gave a link for walkthroughs, I would advise making all levels available from the start for playtesting purposes. :)
4. Aaaah, controls ARE layout-independent!! :D (I have an AZERTY keyboard) (And arrow keys are also enabled.) This is more often than not not the case. Great!
5. Interactive tutorial, great!
6. Dynamic lighting.
7. Very small suggestion: as I see the eyes of the cube go left or right, you could also have them go upwards or downwards when jumping/falling. (Maybe this is one of the things you thought of but did not get the time to achieve.)
8. Weird, I get thin semi-dotted (ie segmented) horizontal lines often randomly on the screen; is it a voluntary effect, or some scanline bug?
9. I cannot jump from the diagonal slope in the upper-left near the lamp in the first ‘jumping area’; is this normal?
10. Wow, disco ‘rift’! B)
11. (Camera issue already mentioned by other comments.)
12. Ah, meeting the yellow cube, I understand that the cubes coexist in the levels; so, your concept reminds me a lot of The Lost Vikings! (If you do not know the game: you get to play simultaneously three Vikings, each with different abilities, and can switch between them. You have to make all three reach the end of the levels — and also bring (three?) objects to the end for the end-world levels.)
13. Too bad you did not have time to add sounds (as it tends to help understanding the action). Still, the game seems very playable. :)
14. Small misspelling: hieghts for heights.
15. Not tested, but if you only get to the next level with part of the cubes, then can you come back and save the others?
16. Discovering the green cube: not tested, but if you switch before discovering a level’s new cube, will it work? :)
17. I am conflicted about the use of respawning at a checkpoint to progress; it feels a little bit glitchy/exploit. You get me, it feels unnatural to ‘sacrifice’ a cube. ;) This may just be me.
18. As for HurDerKen, the forget-X-holding issue struck (in level 4). XD
19. Haha, thanks to my second attempt at level 4, I discover the ‘Nice job. Lava this way’ line! XD
20. It looks like the green cube gets a second jump in the air after bouncing off the yellow cube; also, I just managed to get a super high projection for the black cube by pressing Up right when bouncing from the yellow cube! Is this expected?
21. Not being able to jump from some small diagonals is sometimes a problem, for example soon after the level 5 checkpoint before the big diagonal door.
22. Managed to get the black cube stuck in a small platform! Although I could escape it (and I guess R is a solution).
    
23. Level 6: once having moved left (to the next checkpoint), I apparently cannot get the purple cube back to the lava to help the others… ._.
24. Weird, using level selection to retry level 6, I only have the yellow flag at the beginning, instead of the five (including purple and blue).
25. For other cubes than the black one, jumping to the checkpoint above the acide ‘vat’/basin is hard, because colliding with the ceiling causing a nullification of speed and inertia. Either the collisions should be handled differently, or some ceilings would have to be raised.
    Made it placing a non-bouncing block on the lower platform as a ‘rostrum’.
    (Aaaah, I see in the walkthrough that you used the green cube! X) Not obvious! Ah, but you did then jump directly with the green cube, weirdly… Hints at the jump’s hardness!!)
26. Still in level 6, for the two adjacent switches, one cube is enough to activate both at the same time! Is this expected or not?
    (Walkthrough: not important, in fact. You did not use the leftward switch at all, apparently! Several solutions?)
27. Stupidly got stuck by letting black go to the end before yellow… <:O Cannot call him back? Nor retry?
    Tried going back with black: OH NO, I now have to save both again!! <:o Although the concept of associating a current level to each cube is interesting (and reminds me of how you only keep saved lemmings from level to level in Lemmings 2), it is currently in practice not that workable, since you apparently need everyone (or many) to solve the levels.
28. OH NO. Guess what just happened? I tried the Ctrl + R command to reset the level (as stated on the game page), and… this is also a command to refresh the page in Firefox. And I was playing the navigator version. X) All my progress is lost.
    I think I will stop testing here (I am already super slow in testing the massive amounts of games that game jams provide!), although I am curious as to what the blue cube was all about. ._. Deeply sorry…
    Ah, found out in one of your posts! :)
    And now taking a peek at the walkthrough. (Where I am getting aware that lava particles are cubes too. X))

Takeaway: The Lost Vikings, but with cubes, and some original special abilities (although now that I think of it, Fang from The Lost Vikings II can also hang to the walls!). Such a game is quite a challenge in level design, and I feel you made it! I just think the platforming gameplay is a bit clunky sometimes, which makes it a bit strenuous to have all cubes make it to the exit. (And as already said in other comments, the X mechanic is a problem.) Already a rather impressive base for a full game, well done!

Thank you for the game (although I could not make it to the end for the moment…).

Your game has lots of ideas and content for such a short time, congrats! I liked the controls/cube movements and felt like the level design worked well with the "switching between cubes with different abilities" mechanism. I also really liked the little writings on the wall (laughed at one that said "Lava this way." with an arrow or something like that).

A bit hard to know where to go after the first two levels though, especially with the camera so zoomed in (it was even hard to get through a couple of simple platform jumps because of it at times…). But anyway, overall I had fun shepherding all my little cubes to safety, so good job!

The main problem is the camera zoom. Very hard to control when you don't know where the next platform is. Otherwise, nice concept and take on the theme.

It was a an interesting game...........it would've been a bit more better if the camera was zoomed out a little coz it's a bit difficult to see the next platform to jump to.

Really loved the mechanics of your game

cute game, reminds me of Thomas was alone! 

cute and interesting game : )