Ship your game on Steam without a bad patch
We come from indie studios, so we know what a Next Fest build, a 1.0 launch and a patch-day fire look like from the inside. We plug into your workflow in days and test your Steam build the way players will play it. Fixed prices, first report in 2 to 3 business days.
Book a 30-min call See pricing: from €290
- 25+ Steam releases tested
- POSTAL: Brain Damaged 95% positive
- Blood West 90% positive
- Frozenheim 300k+ copies
Two fixed-price ways to start
Smoke Test
€290 excl. VAT, one-off
- 1 tester, 8 hours on your build
- First launch, settings, controls, the first 30 minutes
- Prioritized bug list with repro steps in 2 business days
Launch Health Check
€590 excl. VAT, one-off
- Up to 2 testers, around 30 hours of testing
- 5 hours of a Team Lead: planning, triage, one clean report
- First prioritized report in 3 business days, 30-min debrief
Ongoing QA
from €1,000/month
- The same testers stay on your game
- Scale up before a demo or launch, down in between
- Add-ons: localization, achievements, multiplayer, playtesting
What the first 14 days on Steam look like
Method, genre medians, rankings and the CSV · Turn the numbers into QA hours for your launch
What studios say
“Jumbo Jelly jumped onto our project last minute and integrated into our workflow quickly, finding and reporting bugs with speed and clarity. Looking forward to working with them again.”
“Transparent, honest and focused. A trusted QA partner we’re always happy to work with.”
What we test
Functional and regression
Crashes, blockers, saves, logic errors, each with repro steps. Regression passes before every release.
Performance and Steam Deck
Frame rate, stutter, loading and memory on a range of PCs, including the Deck.
Multiplayer
Desync, drops and matchmaking, then sessions pushed harder to find where they break.
Localization QA
Translated text checked in the running game. French translation with native linguists.
Achievements
Every Steam achievement unlocked the way players will, re-checked after updates.
Playtesting
Pacing, difficulty, camera and controls, while it is still cheap to change.
Case studies
POSTAL: Brain Damaged
Speedrun routes kept intact after a major update, French localization delivered, aim-assist tuned for controllers.
Blood West
Test documentation built from scratch, a patch-day AI failure traced to a corrupted NavMesh, controller support and low-end performance.
Frozenheim
Procedural map testing, multiplayer stress tests that stabilized online play, QA for a major update and a French localization review.
Hordes of Hunger
Alpha feedback on pacing and feel, camera behavior, ability balance and a map-wide collision sweep for a 3D survivors-like.
Free tools for your launch
QA hours calculator
How many testing hours your launch needs, from the Steam Launch Bug Index.
Next Fest demo QA checklist
Interactive checklist with the February 2027 deadlines. Progress saved in your browser.
Bug report grader
Paste a bug report, get a score on 8 criteria and a list of what is missing.
Patch day QA checklist
34 checks before a Steam update goes live.
Latest from the ship desk
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Launch
Steam Playtest vs demo vs beta branch: which one to use for pre-launch testing, and what each costs in setup time3 Steam test tools compared: Playtest is a free separate app, only a demo counts for Next Fest, beta keys cap at 2,500. Setup time per tool.
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Launch
How long does Steam review take? Store page and build review timelines, with a 6-week release calendarSteam review takes 3 to 5 business days per round, for the store page and the build. A dated 6-week calendar for first releases, with a rejection buffer.
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Patches
More patches, more bug reviews? Steam game patches vs reviews14.9% negative reviews for Steam games with 6+ patches in 30 days vs 8.3% with none. Split by bug rate, the gap disappears. 592 launches, Sept 2026.
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Patches
Day one patch: 22% of Steam launches patch within 24 hours22% of Steam games released in September 2026 patched within 24 hours, 73% within a week; median first patch 42.8 h after release. Data from 592 launches.