Spinward Sprint

Tunnel runner game
1 player
Phones and computers

Spinward Sprint is a tunnel runner game that plays in the browser on phones, tablets and computers, for one player.

Run the inside of a square space-station tunnel, stepping left and right and jumping gaps; walk past a corner and that wall becomes the floor. Each level is three laps: tiles you cross on lap 1 are patched, and unpatched tiles crumble before the faster laps 2 and 3. Finish 24 levels, with stars for fewer falls.

Play Spinward Sprint

How to play

Step with ← and →: walk past a corner and the wall becomes the floorOn a touch screen: Tap left or right to step: past a corner the wall becomes the floor
Jump over gaps with ↑ or SpaceOn a touch screen: Tap the middle to jump over gaps
Lap 1 patches your route. On laps 2 and 3, unpatched tiles crumble

The game shows these steps as you play, the first time.

Spinward Sprint gameplay — Spinward Sprint in play

Controls

← → step (walk past a corner and that wall becomes the floor), ↑ or Space jumps
Touch: tap the left or right third to step, the middle to jump

Tips

Lap 1 is the slow lap, so lay a tidy route: every tile you tread and every gap you jump is patched, and only unpatched tiles crumble later.
A fall costs one of three lives and puts you two rows further on at the nearest tile; one fall means two stars, two falls mean one.
Laps 2 and 3 run at 1.25 and 1.5 times the pace with two fifths of the unpatched tiles gone; follow the cyan glow rather than reading the floor afresh.

Why does the whole tunnel turn when I step sideways?

The runner always stands on the floor. The tunnel is square with three lanes on each face, so stepping off the edge lane of one face moves you onto the next face, and the view rotates until that face is the floor. Twelve lanes go all the way round, so keep stepping one way and you come back round.

Can a level become impossible after tiles crumble?

Your own lap 1 route cannot crumble, because everything you trod or jumped is patched. Levels are also built from a seed and checked by a planner at the lap 3 pace before you see them, and the bot used in testing finishes them with no falls, so a route always exists.

About this game

Made by Sucia in Houston, Texas. Built with AI assistance, designed and tested by Sucia. Last updated October 5, 2026. It plays in the browser on phones, tablets and computers, with no download and no sign-in; your best scores and progress stay in this browser on this device. Without a pass, every game is free for 5 minutes a game and 30 minutes a day; an Arcade pass removes the limit. How Sucia makes and tests its games.

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