Sports adventure · Built with AgentGrid

James the Mountain Biker

Find your line, hold your nerve, and keep the run alive. James is a fast, physics-driven mountain biking adventure across an endless Pacific Northwest trail.

Play Game →Free in your browser · Keyboard controls

A mountain biker descending a winding alpine trail at dusk — The creative north star: a trail that keeps pulling you toward the next ridge.

2.64 km

Authored opening course

Endless

Deterministic continuation

60 FPS

Desktop target

Made on the canvas

A mountain run that keeps unfolding.

AgentGrid workers turned terrain research, bike and rider rigs, handling physics, procedural course generation, audio, menus, and repeated playtests into one continuous browser game. The opening 2.64 km is authored; deterministic trail tiles carry the ride onward.

Read the terrain

Hardpack, gravel, mud, grass, wet ground, and wooden features each change the ride. Thread rollers, shaped kickers, technical grades, and trail obstacles without losing momentum.

Commit to the line

A full bike and rider rig responds to steering, pedaling, braking, jumps, wheel contact, and landings. Chase speed and score while the camera keeps the trail readable.

Crash. Rewind. Go again.

Miss the landing and James separates from the bike in a physics-driven ragdoll. The game rewinds to a safe trail state so the next attempt is only seconds away.

The trail is the story

Real captures from the playable build, from the quiet start screen to open ridgelines, airborne mistakes, forest obstacles, and the tunnel far down-course.

James riding along a broad dirt trail with mountain ridges ahead and the score HUD above — Settle into the chase camera and build speed across the open alpine course.

James flying away from his mountain bike after a failed jump — Every jump is a choice. Not every landing goes to plan.

James approaching a fallen log on a dirt trail through a sparse evergreen forest — Streamed trail sections introduce forests, deadfall, ramps, and new terrain far beyond the opening ridge.

James riding through a dark earthen tunnel toward a bright exit — Deep into the ride, the trail disappears underground before opening back into daylight.

The Downhill title screen with the words Find your line. Hold your nerve. — A focused start: new run, controls, settings, then straight back to the mountain.

Built with AgentGrid

One more run. The next clean line is already waiting.

Play James Build with AgentGrid