Sprintframe
Runner Loop Prototype service

Service 01 — $300 USD

Feel how your runner
plays before you commit
to anything.

A focused build of your core forward loop — lanes, obstacles, pacing — so you can hold a working prototype in your hands and decide what comes next with confidence.

What this delivers

A loop you can actually run on a phone.

Before any art. Before any sound. Before you've settled on a theme or a character. What you get from this service is a playable build — one that moves, responds, and gives you honest feedback on whether your pacing instincts are right.

Playable on device

You receive a build you can install and run, not a demo video or a mockup. The loop is real.

Procedural lane setup

Lanes generate as the player moves forward — no static layouts, no hand-placed tiles needed at this stage.

Room to adjust

The work is light and exploratory by design. Nothing is locked in — after testing, you'll know exactly what to change.

Where most projects stall

It's hard to judge feel from a design document.

A lot of runner projects spend weeks on art direction, character design, and world-building — and then discover, when the first loop is finally running, that the pacing doesn't feel right. The obstacles come too fast or too slowly. The lane width is off. Something in the rhythm is missing.

That's not a failure of vision. It's just the nature of the format. Endless runners need to be felt, not read. And the earlier you can feel yours, the calmer the rest of development tends to go.

Committing to art before the loop feels right leads to costly rework later.

Generic game dev tools don't account for the specific rhythm of a forward runner.

Without a playable build early, the team is guessing rather than responding.

Building the core loop in-house takes time that early-stage teams rarely have to spare.

How we approach it

A prototype built for the specific needs of an endless runner.

This service doesn't apply a generic game template. Everything in the prototype is designed around how runners actually work — the forward camera, the lane-switching mechanic, the way obstacles need to appear at a distance that feels fair. We keep the scope tight so the result is focused, not cluttered.

Procedural lane generation

Lanes are built to extend forward as the player moves, so the runner never hits an edge. The structure is clean and easy to modify.

Simple obstacle spacing

Obstacles are placed using spacing logic that gives the player enough time to react — not too easy, not punishing. A solid starting point.

Quick playable build

The deliverable is a build you can run on a mobile device — something to share with teammates, advisors, or just yourself on a quiet evening.

Light and exploratory scope

This isn't a full game — it's a foundation. What you learn from running it will inform every decision you make from here.

What working together looks like

A calm, contained process with a clear endpoint.

01

You share your concept

A brief description of the runner you have in mind — genre feel, lane count, any mechanics you're considering. Nothing formal needed.

02

We align on scope

A short exchange to confirm what the prototype will cover. We'll flag anything that's out of scope for this service so there are no surprises.

03

Build and check-in

Work proceeds at a steady pace. You'll hear from us as the loop takes shape — no radio silence.

04

You receive the build

The playable prototype is delivered with brief notes on what was built and how to extend it if you choose to continue.

What it costs

A clear investment for a defined piece of work.

Runner Loop Prototype

$300

USD — fixed price, no additions

Get started

Payment arrangements are discussed during the initial exchange. We work with clients worldwide and keep the process simple.

What's included

  • Procedural lane setup suited to your runner concept
  • Simple obstacle spacing with basic avoidance logic
  • Playable mobile build ready for device testing
  • Brief handoff notes on structure and next steps
  • Async communication throughout — no scheduled calls required
  • Clean, readable code your team can build on top of

Why this works

A framework built around how runners actually play.

The approach behind this prototype comes from working closely with the specific rhythms that define the endless runner format. There's a body of thinking around obstacle timing, lane readability, and forward momentum that doesn't map onto other game types — and this service applies that thinking directly.

~2 wks

Typical delivery window from brief to playable build

Fixed

Scope and price defined upfront — nothing changes mid-project

Early

The prototype gives you real data before any serious art investment

Our commitment

We're not going anywhere until you're satisfied with what was built.

If the delivered prototype doesn't match what was agreed in scope, we work to make it right. Our goal is for you to finish the engagement with something you can genuinely use — not just something technically delivered.

Not sure if this is the right service for your project? Start with a conversation. There's no commitment in reaching out — just a chance to understand your situation and see if we're a good fit.

Scope is agreed before work starts

What we build is defined clearly in advance. There's no drift.

Open communication throughout

You can ask questions at any point. We respond promptly and plainly.

No-obligation first conversation

Reach out with your idea. We'll respond with honesty, not a sales pitch.

How to move forward

Getting started is straightforward.

Step 1

Write to us

Use the contact form on the home page. Describe your runner and what stage you're at — a few sentences is enough.

Step 2

We respond

Within a couple of business days, you'll hear back with a clear note on whether and how we can help.

Step 3

Work begins

Once scope is agreed and the project is confirmed, we start building. You'll have a working prototype in roughly two weeks.

Runner Loop Prototype — $300 USD

Ready to feel your runner play?

Send a note about your project and we'll take it from there. No commitment, no pressure — just a conversation about what you're building.

Get in touch

Explore other services

Not quite the right fit? There are two more.

$480 USD

Obstacle & Reward Tuning

For teams with a runner already running — this service balances obstacle difficulty and reward pacing so the experience stays inviting.

See this service

$640 USD

Endless Content Setup

A modular segment system with a difficulty scaler and clear documentation — so long sessions feel varied without hand-placing every piece.

See this service