What did this game do well?
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I like the PCG generation aspect of this game and how the mechanics are. I like the concept of navigating through the maze as well, and I like the fact then when you fall onto the maze, you get a quick view of it so you can plan your path.
I really like the way that the map was procedurally generated to feel like a maze but still have a path that is not too difficult to find and solve. It was a nice balance of thinking, but also mechanical skill to stay on the path.
I really loved the idea that the levels spawn from bottom up. I thought it was a clever detail because the player gets a good view of the current level maze. I also love the background and general idea behind the idea of playing with marbles. The background image adds some great context, and I really felt like I was having fun playing with toys while playing. One last thing to mention is how great the level transitioning was. I thought it was intuitive and made the game feel very cohesive.
I like the physics and mechanics of the game, they feel very straightforward and natural. I also really like the game loop.
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What could this game have done better?
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The ball mechanics could have been better, it feels very difficult to control and navigate few turns and edges, especially on the cylindrical paths, and the inertia was too much.
The corners with the rounded edges are very difficult and can be a really big pain to try and cross. I think maybe keep those generating at a lower rate or towards the end instead of having a chance to spawn right at the start and discourage the player. I think also the background could use an update, because its a little disorienting to have a 2d background while moving around in 3D.
I did think that the sensitivity could be turned down a bit. I understand that the intention with making it difficult was to induce skill learning, however I think it may have been appropriate to make the sensitivity a function of the level or time played. As it progresses it may have gotten harder. I also would have loved to see some intuitive UI in the gameplay. This could have been something like a % done bar on top for each level, or the level number displayed, or time displayed.
I think some indicators specifying whether I am on the right track or not would be good. Every time I get to the pipes I immediately fall off so it made me question if that was the correct path or not.