Clever idea, but movement is way too slippy.
Author Comments
Make your Number 0,and a portal will open to the next Level.
-Portal Is Zero is a 2d Platformer Game, Where you will play as Numbers.
-Your Goal is to Make your Number 0, it will Open Up a Portal that will allow you to go next level.
-Green Numbers are Positive and Red Numbers are Negative.
How to Play:
-Use WASD or the arrow keys to move and Space to jump
-Make Your Number 0, it will open a Portal And you can go to the next level. (Portal will Only work if your Number is 0.)
Pretty interesting concept, kinda reminds me of Baba is You in terms of "complete this condition to reach the goal". Where it's lacking is in terms of actual gameplay, mostly how the physics and controls feel.
Physics-wise, everything feels slightly slippery and sluggish, making platforming difficult. I noticed this in level 5. (It would also benefit with slightly larger platforms)
The height of which you jump is alright, but it could really do better with a double jump to round out the lack of midair control. A jump that allows you to change your midair direction instantly.
Again, I really like the concept, but the actual gameplay elements need some rounding out. If you also can in the future, employ an artist friend to assist with art direction, because that would also bring this game to life :)
Last level was hard but, success!