Deadly Days: Roadtrip is a bullet heaven whose real game is Tetris. Your backpack is the build, and where things sit decides how strong they are.

You drive a bus through a 2.5D pixel zombie apocalypse, collecting fuel, and choosing at each stop whether to push on or extract.

Chart credential: entered the Steam 250 weekly chart as a new entry at #4, scoring 8.24 from 3,136 reviews at 88% positive. Released 29 October 2026 by Pixelsplit, published by Sidekick Publishing.

Key features

Adjacency is the whole build system

Space in the backpack is tight. Every weapon and item takes room, and placing them correctly makes adjacency effects stack. You can merge items into stronger versions or craft new legendaries.

This is the Backpack Hero idea applied to a horde shooter, and the two fit better than they should. A bullet heaven’s weakness is that power creep is invisible — numbers go up somewhere off-screen. Making the build a physical arrangement you look at turns that growth into something you can see and plan.

You choose when to extract

Each stop brings you nearer the final boss, and you decide when to stop pushing. The extraction decision is the risk valve, and it is what makes a good run feel like a judgement call rather than an endurance test.

Co-op where only one person needs to own it

A friend can join without buying the game. That is a deliberate acquisition choice and a generous one — worth noting at a time when most co-op games require two copies.

Endless Mode until something breaks

After the campaign, builds keep scaling until, as the developers put it, your build or your PC gives up. Breaking the game is treated as the goal rather than as a bug.

Where to find Deadly Days: Roadtrip

• Buy on Steam — $9.74 (35% off)
• Windows only. Online and split-screen co-op, full controller support

Frequently asked questions

Can you play Deadly Days: Roadtrip co-op?

Yes, in online and shared-screen co-op — and your friend does not need to own the game to join.

Is Deadly Days: Roadtrip a bullet heaven?

Yes, with a backpack-grid build system layered on top. Loot takes physical space and adjacency effects stack.

How much does Deadly Days: Roadtrip cost?

$9.74, discounted 35% from $14.99 at the time of writing.

Is there an endless mode?

Yes. Endless Mode lets builds keep scaling after the main run.

Who made Deadly Days: Roadtrip?

Pixelsplit developed it and Sidekick Publishing published it.