cool concept! 

The madlad literally made the game in less than a day, congrats, for the limited timeframe you made this in it's a total masterpiece, but for the 3 day period we were supposed to develop our games in its at most a decent

Nice little prototype you got here! The art could definitely be improved! Also consider added a difficulty system, that would make the game a whole lot more fun! 

decent game. it feels pretty easy but that is my only complaint.

I don't really like how the game looks and the gameplay isn't for me.

That said, for someone who likes score chasers this might be pretty cool.

too eazy but nice game 

A bit too casual, but good

It lacks difficulty increase. The speed of the rectangle doesn't change at all. But I like the concept tho.

Awesome and thanks for the shapes because of colorblindness. I did see one bug in this game. If you spam the right arrow really fast, it gives you the score and lets you cheat.

Well-executed!

I have seen similar mechanics before, and I think it is a good approach to the theme and geometric limitations. I appreciate the execution!

Good job!

Simple mechanics, definitely could be expanded into a popular mobile game. I think the only thing was the lack of a tutorial/controls page, but other than, really good job and great execution. Also, I think that removing the icons from the blocks could have helped too, since they were either stretched or didn't look right. I think solid colors could really help the game. All in all though, great game, I found myself continuing to play longer than I should have, haha.

Simple idea. Great execution. Well done!

I really enjoyed the mechanics, would you mind if I used it in game?

This is what a simple idea when executed right looks like. But you can always improve some things. Like check the resolution so that the dimensions look a bit weird (browser) and maybe center the object and have stuff coming from multiple directions! 

BEST THING I'VE EVER PLAYED IN MY LIFE lol

Good job! very simple, and like another commenter says, the incorporation of symbols on each side is a great idea, it makes this game more accessible/color-blind friendly :)

simple yet fun game, can you play my game?

Easy and simple game, doesn’t need explaining. nice job

Easy and simple to understand! Good job!

The game is simple and fun :D. it's the kind of game I can understand in seconds, so extra points for that. My only piece of feedback is maybe ramp up the speed of the differently coloured rectangles.
Good game :D