Blood Vial: Solo Dev FPS Hit 100% on Steam at Launch

Updated 2026-10-30: Steam now rates Blood Vial Very Positive, 96% of 360 user reviews (store page checked October 30). The 100% in the title is the launch score from 28 reviews.

Blood Vial: key takeaways

• Blood Vial launched May 4, 2026: solo developer, self-published
• Micro-FPS roguelite where swimming through enemy blood refills your health and enables wall-running
• Inspired by Post Void, Splatoon, and Ultrakill
• Procedurally generated crypts and cathedrals
• 100% positive on Steam at launch (28 reviews)
• Launched at a $4.99 list price with a 15% introductory discount; the launch discount has expired

Blood Vial launch: what happened

Blood Vial launched on May 4 with a mechanic that earns its title. Your health is a vial that leaks constantly. The only recovery method: swim through blood left behind by defeated enemies.

That sounds like a resource-management twist on survival. It's also a traversal system. Blood sprays onto floors, walls, and ceilings during combat. Swimming through a blood-coated wall lets you run it. A blood-splattered grate becomes a surface you can climb or a gap you can cross. The game ties health management and movement to the same action: holding distance costs you health, pushing in earns it.

Dillon Steyl cites Post Void, Splatoon, and Ultrakill as primary influences. Post Void is the clearest parallel: a tightly scoped FPS built around resource anxiety and fast decisions. The Splatoon connection is the fluid-traversal concept: ink swimming, moved to blood and to a crypt. Ultrakill sits in there as the design ancestor: refill health through aggression, not retreat. Blood Vial adds a verticality layer neither Post Void nor Ultrakill has.

Between levels, players seal sacred pacts: chosen upgrades that stack across a run. Starting weapons are a shotgun and revolver, with additional options unlocking through play. Levels generate procedurally across crypt and cathedral environments. Steam Leaderboards track scores between runs.

At launch, all 28 Steam reviews were positive. Check Steam for current pricing: a 15% introductory discount ran at launch.

Current status: September 2026

Blood Vial's launch review snapshot is historical. The current Steam listing checked for this audit now shows a Very Positive aggregate with hundreds of reviews, while the $4.99 list price is the reliable current reference. The short single-player structure and blood-swimming health and traversal loop remain the core pitch.

Why it matters

Solo-developer FPS releases with a coherent mechanical identity are not common at this price point. Blood Vial's central idea is clear: one mechanic runs both health and movement. Players who know Post Void will understand the pitch immediately, and the blood-swimming mechanic is different enough that it's not just a reskin.

The procedurally generated structure raises the question of run variety over time. At 28 reviews, the sample is too small to assess replayability with confidence. What the launch score does confirm: the core mechanic works for the players who have tried it.

For context on where the retro-FPS revival stands in 2026, our Twisted Tower preview covers a different execution on a similar stripped-down premise, a BioShock-style horror shooter instead of a blood-fueled roguelite. Blood Dungeon and Blood West show two other ways recent indie shooters use blood, combat pressure, and exploration. For roguelite context, Die in the Dungeon launched the same month, a dice-builder that takes a completely different angle on the short-run format. If you've been tracking recent indie roguelite launches, Gambonanza also dropped this week with a different approach to the replayability question.

Frequently Asked Questions

What is Blood Vial? Blood Vial is a retro micro-FPS on Steam developed and published by solo developer Dillon Steyl. Your health is a leaking vial you refill by swimming through blood left behind by defeated enemies. That same swimming mechanic also doubles as traversal: climbing walls, crossing gaps, and moving through grates coated in enemy blood.

Who made Blood Vial? Blood Vial was built and self-published by Dillon Steyl as a solo developer. It released on May 4, 2026.

What does the blood-diving mechanic do? Swimming through enemy blood refills your leaking health vial. The mechanic also works as traversal: blood that splashes onto walls and ceilings lets you run vertical surfaces, cross gaps, and navigate through grates. Health management and movement are the same action.

What games inspired Blood Vial? Dillon Steyl names Post Void, Splatoon, and Ultrakill. Post Void is the clearest parallel: a fast, resource-pressured FPS stripped to its core. The Splatoon connection is using fluid as a traversal medium. Ultrakill contributes the philosophy of refilling health through aggression rather than retreat.

How much does Blood Vial cost? Blood Vial launched at a $4.99 list price with a 15% introductory discount that ran until May 11, 2026. The launch discount has expired.

Does Blood Vial have multiplayer? No: Blood Vial is single-player only. Steam Leaderboards allow score comparison between runs.

References

• Blood Vial on Steam
• Blood Vial Steam launch announcement: official release announcement and launch context
• Post Void on Steam