This is a new idea to me, but it can get very frustrating.
I've played the first 3 levels, but I think there are ways you can improve
-Try a block design- Apply a design for the pre-drawn level.
- Allow to reset your current level, removing lines you placed in that level.
- More consistent controls... the controls are way too unpredictable

This is a interesting, challenging and creative with a cool mechainic. stRoll is kind of like Where's My Water and Line Rider in how you are able to change the terrain of the level, but the mechanic where what you draw stays, is pretty neat. The controls are pretty wonky, and the animation isn't that great. The physics of the game doesn't really make sense, and you seem to bounce in the opposite direction that you want to go most of the time. The background is kind of simple. I don't know why you picked it, but who cares. Good game.

Looking at what this is: a short game programmed in barely any time trying to bank on 1 interesting / innovating concept, this game is good.

My main issue is that I think the core concept of this game (being the lines that stay on the screen throughout levels) is bad game design. Because inherently there's no way to solve levels properly. The only way to know whether or not you screwed yourself over is Trial and Error. The game hence stops being a puzzle, because there's no actual way to solve it rather than redoing everything once you get to a new level.

I'd say this is a good execution of a poor idea.

pretty cool physics game, I like the idea. the game was very easy to break though, the sound effects would freak out if he was bouncing around too much and the game ended up crashing because i fucked with the collision too much. also i got him to clip though pretty easy, I think this type of game warrants some pretty complex collision.

It has potential but the char is too hard to control imo. I like the way it jumps. It's never the same