Low-poly UNG FU ninja with a red sash and katana on a forest path

UNG FU: A Fast-Paced Ninja Runner Through a Deadly Forest

A fast three-lane endless runner you can play online, where every swipe can save—or end—your run.

Play now

Free in your browser. No download.

Endless runner. Choose wisely.

UNG FU is a free browser game: a three-lane ninja runner you can open on mobile and desktop with no download. You hop one tile at a time through a deadly forest. There is no walking. Each swipe or keypress flips you into a new lane, and a single mistake can end the run.

The path is packed with traps, coins and skeletons. Spike pits kill on contact. Coins mark a safer line if you want it. Skeletons fight back; a hit refills health, and four kills charge a sweep through everyone on screen.

These are fast, score-based runs. Distance, coins, and skeletons become a score, and your personal best stays on the device. The same game works with a swipe on a phone or WASD on a keyboard. Play the browser game online now, or join the waitlist if you want the iOS and Android launch email.

On the path

You hop one tile at a time. There is no walking.

Spike pits

One bad swipe ends the run. Coins mark a safer line if you want it.
Skeletons

Hits refill health. Four kills charge a sweep through everyone on screen.

The forest does not stay a forest

Push far enough and the ground changes under you. The world moves through woodland, desert and graveyard, then blends back to where you started — and the pressure never resets with it.

Tiles 0–249

Woodland

Five green palettes, from bright grass to golden-yellow. Skeletons early, robots later.
Tiles 250–299

Desert

Sandy checkerboard and warm rock. Orc raiders take over the path.
Tiles 300–359

Graveyard

Dead trees and lantern light under cool moonlight. Necromancers wait here.

The scenery loops every 360 tiles. Health drains at 2.5 a second at the start, rises to 5 by tile 360, and stays there. Thrown rocks still fly quicker as the run goes on.

Bosses fight back properly

Every fifty tiles a boss takes the whole row. The camera drops into a close-up arena and the running stops: now it is a duel. Swipe left and right to cut. They block, they swing on a timer, and two of them throw rocks you have to slash out of the air.

Tile 54
Steve
Skeleton golem with a great axe.
Tile 104
Sven
Slow mace, brutal damage.
Tile 154
502
Clean mech, katana.
Tile 204
404
The weathered one. Same blade.
Tile 254
Greg
Orc brute. Fists and rocks.
Tile 304
Gary
Orc brute with an axe.
Tile 354
Demon Lord
Hits for a fifth of your health.

Boss health: 100
Damage per swipe: 5
Clean hits to win: 20
Win and you heal to: 100
Chest reward: 20–80

Beat your best run

Distance, coins, and skeletons become a score. Your personal best stays on the device. On iOS and Android, a finished run can go to the platform leaderboard.

10 points for each tile you push forward
5 for a coin, 25 for a skeleton, 100 for a boss
A new personal best is called out when the run ends

A run ending on a spike pit as the ninja bursts into red cubes

106 characters to collect

Coins outlive the run. Spend them on a mystery unlock and you get a character you do not already own. The first four cost 20, 50, 100 and 200 coins, then the price caps at 250. No duplicates, ever.

Knights, mages, werewolves, skeletons, astronauts and a training dummy. Four ninjas are earned instead: reach a full biome loop, or defeat 100 and 500 enemies. A few more are hidden behind things you have not done yet.

How to play

Swipe or use the keys. The first run shows the same hints on the board.

Left · A

Flip diagonally forward into the left lane. At the edge, you wrap to the other side.
Right · D

Same idea the other way.
Down · S

Hop straight back one tile. You cannot do this twice in a row.
Up · W

When the power bar is full, swipe up to jump through the skeletons on screen.

Think you can stay off the spikes?

Play UNG FU