Solo development is its own kind of argument. When Codebrew Software — a one-person studio out of Nottingham — shipped the free demo of Sublight, they were testing a hypothesis: that the bullet-heaven formula, the genre that Vampire Survivors proved could sustain an entire game on escalating chaos, had room for a space-combat variant built around a battleship rather than a lone wanderer. The answer came in aggregate: over 60 million kills logged, without a single paid copy sold.

Level-up upgrade selection screen showing weapon and passive choices in Sublight — Image: Codebrew Software

Sublight positions itself at the intersection of the top-down space shooter and the roguelike upgrade loop. You command a stellar battleship through hostile sectors, and each run is shaped by the layered build system underneath: autocannons stacked with passive modifiers, railguns tuned for piercing coverage, shield configurations that define your approach to risk. The Early Access release arrives with six levels, nine playable ships, over sixteen weapon types, and two enemy factions — architecture enough to reveal what the game’s internal logic is, without yet showing its full range.

A battleship traverses a frozen sector while engaging enemy ground units in Sublight — Image: Codebrew Software

What keeps runs from feeling interchangeable is the upgrade selection rhythm. At level-up points, you draft from a pool of weapons and passive modifications — and the combination defines not just damage output but movement philosophy. Weekly rotating level modifiers add an additional variable to each session, ensuring that the same build does not arrive at the same answer twice.

Codebrew’s content roadmap is more candid than most Early Access launches about where the design is heading. By the end of 2026, the plan calls for an expanded enemy roster, new ships, and balance adjustments built around player feedback. The larger commitment arrives in mid-2027: a campaign structure organized around an XCOM-style threat map, connecting individual missions into a longer arc with narrative purpose. Community-voted content — ships, weapons, and builds selected via Discord polls — follows in the third quarter, alongside mod support. Each announced phase is marked subject to change, which, for a solo developer managing scope against a live audience, is the honest qualifier.

Sublight is available now on Steam Early Access, priced at $11.99 / £9.99 / €10.99 / ¥1,400. The free demo remains live for players who want to assess the loop before committing. Codebrew is, at this stage, building in public — the 60-million-kill floor is not just a marketing number; it is the evidence that the system has something to iterate on.

Tags: bullet heaven games, Codebrew Software, space roguelikes, Steam Early Access, Sublight