Thrumstep: Rhythm Runner

A rhythm runner: jump the drums and slide under the speakers exactly on the beat of six songs the game composes as you run, from 96 to 144 BPM. Combos to x4, grades from S to D, a practice mode. Free, no ads, no tracking.

Run through six neon streets where every obstacle is a note. The drums on the ground and the speakers overhead arrive exactly on the beats of a song that Thrumstep composes and plays as you run, so you can hear the next jump before you see it.

Press on the beat: within 55 ms is Perfect, within 120 ms is Good, later is a Miss. Three misses in a row and you fall; a long combo pushes the multiplier to x4.

• Six songs: Copper Lanes (96 BPM) to Zenith Thrum (144 BPM), each with its own key, chord progression, drum pattern and colours
• Obstacles are the melody: a jump is a rising note, a slide a falling one, and phrases repeat like the music does
• Judgement and combo: Perfect / Good / Miss, a combo meter and a multiplier up to x4
• Falling: three misses in a row end the run; one hit resets the streak
• Practice mode: any song, even a locked one, at 75% speed and without falling
• Grades and progress: best score and a grade from S to D per song are saved

Code and text written with AI assistance; checked by PN Scripts with automated tests. Every shape is drawn and every sound synthesised by code; there are no AI-generated image or audio files.

Controls

• Space / Up / W: jump
• Down / S: slide
• Tap the upper half: jump, the lower half: slide
• Song menu: arrow keys and Enter, 1-6 pick a song, X toggles practice at 75% speed
• P / Esc: pause, M: sound

Made by PN Scripts.