Update history
Latest Security 51 updates
Search patches, hotfixes, and dev posts. Load more to keep browsing the timeline.
Browse updates
Published changes
Search updates. Filter by source or date. Open any row for the full patch notes, or load more to continue the timeline.
- Security 51
Demo Update
Greetings, security officers. We’ve reviewed reports from recent shifts and made several adjustments to checkpoint procedures. Thank you for helping us identify inconsistencies in the facility’s operations. Please, make…
Security7 changesFixBalance - Security 51
Steam Next Fest is live!
If you haven’t tried the Security 51 demo yet, now is the perfect time to start your shift. We’ve added lots of new content since the playtest, including reworked shifts, infection tracking, new events, and much more. G…
Security3 changesGameplay - Security 51
Security 51 Demo is Live
Dear agents, A few weeks ago, thousands of you joined the Security 51 playtest and stepped into your first shifts deep beneath Area 51. Since then, we’ve been carefully reviewing your reports, discussions and feedback.…
Security12 changesGameplayBalance - Security 51
Playtest Results
Our first Security 51 playtest is over. Guarding the top-secret military object is no joke - and we thank you all for your hard work! Playtest stats: 7,000 unique players have joined the playtest. No blind spots in our…
Security6 changesStore - Security 51
Playtest hotfix
We have released a playtest update that includes balance changes and fixes for critical bugs. Important: with this update, old saves may become corrupted, which will significantly affect gameplay. We recommend starting…
Security14 changesFixBalance - Security 51
Join the Playtest
Dear agents, Security 51 is a simulator of an Area 51 security officer. Guard the elevator decending from the surface into the endless depths of the underground laboratories. Only you decide who goes in and who gets to…
Security7 changesServerGameplay
