Semi-on-the-fly remarks:

1. "Q" to quit -> rather write "QUIT"
2. No sound? It helps giving life and cues to the player.
3. oh, movement by clicking; original, but I think the keyboard would have felt more natural. Or maybe you were afraid some people would have trouble getting the directions right? In this case, you could still enable both the clicks AND the keyboard. Also: your idea may be useful for tapping on mobile devices.
4. super original mechanic! :) At least, in this genre (I agree "Mario" used it, otherwise XD)
5. I like the small ‘tilt’ from the camera when moving
6. the button for dialogue (the circled "i") could be a bit more visible, I think
7. 2nd answer option from first dialogue: the end may be cut! I only see "Have you heard anything about the"
8. I like the ‘Lego’ building near the beginning, and its window lights! :)
9. Man to the North-East: no closing-dialogue button? Also, you can still move during the dialogue!
10. I wonder if you can only ask one question to each character each time on purpose; this forces you to take care of your path if you want to interrogate each one in each pass. I think adding a limited number of lives and a randomised culprit for each run would add to the challenge! :)
    I think it is super original to mix a whodunit with a puzzly no-return moving mechanic. :)
11. Black man: I wonder if the question is cut, too.
12. moving behind walls makes it harder to see on which cube/tile we are stepping -> advice: make the walls get transparent when the player character is located behind them!
13. "is it because I'm black?" -> political correctness is everywhere! XD (By the way, I had seen someone play the first season of the video game "The Walking Dead", and you (Lee) get to utter such a line if you want. Big Brother is watching over you!)
14. Even though I have nailed the suspect, trying all the other options first. :p
15. Wow, the line closes automatically! :o I think you should let the player close the final line from the North-East character, just like the other lines before.
16. misspelling in the answer "Jhon" -> "John"
    There are some other misspellings and language mistakes, often minor, but sometimes, they can make things more difficult to understand.
17. It is not obvious which name is whose; I think displaying the characters’ names as you are talking to them (or even when you are near them) would help!
18. The whole guessing part is like Cluedo! :) And I like that you get a different epilogue for each final choice.
19. Ah, apparently, amongst the bad endings, you can have worst ones! Spoiler: Man in Black is worse than Stephani.
20. In the ‘right’ ending: "Ochs" instead of "Ox"; I wonder if this is caused by Russian? ;) (Since you are from Kazakhstan.)
21. Spoiler: hahaha, I just LOVE how the ‘right’ ending turns out to be not so good after all! XD It looks like the best ending is when you arrest Stephani!

Takeaway: to me, this is an early prototype with the super interesting idea of mixing the no-return puzzle/platform mechanic with whodunit cluedo; I really like the originality! Both aspects could mix well; I just think that here, you apparently could not develop each enough: the spatial design is straightforward (not much of a labyrinth!), there should be some punishing mechanic (see above for an example: randomised culprit/everything* + possibly lives?), and the investigation should also be more complicated (several clues, possibly several things to guess — as in Cluedo! —, red herrings, possibly objects to find…). As a side note, I also liked the whole background and funny (? XD) story that comes with everything.

I would encourage you to develop the game more, there is much under-exploited potential. :)

* For the record, in the 1997 adventure game "Blade Runner", the replicant status of ALMOST ALL characters (with a few exceptions and contraints) is random at each run. :)

love the art style but i feel like the use of the limitation could have been better

because Dying has no penalty you just go back to solving the case, everything else was pretty cool tho

I liked that they implemented restrictions, so when the blocks fall, it really is * all temporary *. Management was unusual and a little difficult