Downstream

You are a bead of rainwater on its way down. The channel runs through four places and then round again: a night gutter, the green light under a leaf, a stream with the floor moving beneath you, and a drain of grates and holes. Each of them has one thing that happens nowhere else. Under the leaf, drips fall into a lane with barely a moment to step out. In the stream, currents carry you sideways unless you jump them. In the drain, the floor opens and only a long jump reaches the far side. In the gutter, a lift pad throws you high enough to sweep every droplet in the air on the way down. Grow, and it costs you. Three droplets make you bigger, and a bigger drop survives a knock that would spend a smaller one, but it jumps lower and lands heavier. Pass a block closely and your multiplier climbs. Clear a bar late in your jump and you land perfectly, which buys you a second jump in the air. One thumb, three lanes, runs of about a minute. It is the same channel every time for the same seed, so the way to get further is to get better.