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About Tether
Tether is a free browser game with exactly one button and exactly one idea: momentum is everything. You're a charged mote falling through a deep-space canyon, and the only thing you can do is throw out a tether. Hold the button and the grapple flies to the nearest anchor ahead of you; the line snaps taut and you swing beneath it on a genuine rope constraint. Let go and you keep every bit of the speed that arc gave you. There's no thrust, no steering and no brakes — the entire game lives in the timing of when you grab and when you release.
What makes it more than a simple grapple toy is that the rope pumps itself as you swing — reeling in through the bottom of the arc and paying out at the top, exactly the way you build height on a playground swing by shifting your weight. Ride an arc well and you come off it faster than you went in, so a skilled player accelerates instead of just maintaining speed. Chain those releases together and you scream through the canyon; mistime one and you drop into the plasma sea below. It's a one-button game that's trivial to start and genuinely deep to master, with your distance going straight to a global leaderboard.
How to play
- Desktop: hold the mouse button or Space to fire and hold the tether; release to let go.
- Phone / tablet: hold anywhere on the screen to grapple, and lift your finger to fly. That's the entire control scheme.
- The tether always grabs the nearest reachable anchor ahead of you, and a dashed line shows which one you'd catch before you commit.
- Your score is the distance you travel. Glowing cells add a bonus, and each zone you clear gets faster, sparser and meaner.
- Falling into the plasma sea or clipping a mine ends the run instantly — there are no lives.
The physics of a good swing
Tether rewards players who understand where their speed is pointing. When you're at the bottom of a swing your velocity is flat and horizontal; at the top of the upswing it points up and forward, which carries you much further before gravity pulls you back down — so the release point is the single biggest decision you make on every arc. Just as important is when you grab. The longer you let yourself fall before hooking an anchor, the more speed gravity has already handed you, and the rope simply converts that fall into forward momentum. Put those two ideas together — grab late, swing wide, release at the top — and you'll leave each anchor faster than the last, which is exactly how the leaderboard runs are built.
Tips & strategy
- Release at the top of the upswing. At the bottom your speed points flat ahead; at the top it points up and forward, and you fly much further for free.
- Grab late. The longer you fall before hooking, the more energy gravity has already given you — the rope just turns that fall into forward speed.
- Reach ahead, not overhead. An anchor slightly ahead gives you a whole arc to accelerate through; grabbing one directly above you only halts your fall.
- Long rope, fast rope. Hooking a distant anchor and letting the self-pump reel you in produces the biggest, fastest arcs.
- Know when not to swing. Once you're already at full speed, a long flat glide between grabs covers more ground than squeezing in an extra swing.
About the genre
Grapple and swing games are a small, distinctive branch of the platformer and endless-runner family, built on the surprisingly rich feel of rope physics — a single pendulum can produce endless variety in timing and arc. Their appeal is that momentum is something you earn and preserve rather than something a button just gives you, which makes a clean, fast run feel genuinely skilful. Tether is an original, one-button take on that idea, built from scratch for the browser, with a self-pumping rope that lets a good player accelerate through a run rather than merely survive it.
FAQ
Is Tether free? Yes — free to play in your browser, supported by ads, with no purchases.
Do I need an account? No. You only enter a display name when submitting a score to the leaderboard.
Does it work on mobile? Yes — it's a one-button game, so a phone plays it perfectly: hold anywhere to swing, lift to fly.
How do I go faster instead of just staying alive? Grab anchors late, swing wide, and release at the top of the arc. Done right, you leave each swing faster than you entered it.
What ends a run? Falling into the plasma sea or hitting a mine. There are no lives, so a single mistake ends the attempt.