Screenshots
Watch trailer on Steam ↗.T.E.S.T: Expected Behaviour — Sci-Fi 3D Puzzle Quest
Veslo Games · Published by Veslo Games
Mostly Positive — 75% positive (92 reviews) · 42 achievements
Last updated 27 Sept 2026
.T.E.S.T: Expected Behavior is a first-person brain twister with a sci-fi plot. On top of logic, you'll need a fast reaction speed, "outside the box" reasoning, and the skill to adapt to unfamiliar situations.
£4.79
Lowest price we've ever recorded
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£4.79
Price history
3 Sept 2026Lowest: £4.79 · Highest: £4.799 Oct 2026
Action, Adventure, Indie, Simulation · 2018 · More under £5 games
Embark on a brain-twisting journey through .T.E.S.T: Expected Behaviour, where you'll navigate complex puzzles and adapt to strange situations. Dive into an immersive, action-packed indie experience that tests both your mind and reaction speed.
About this game
.T.E.S.T: Expected Behavior is a 3D first-person brain twister in a sci-fi setting. Solve puzzles to test your logic, think outside the box, act fast and use your skills to adapt to unfamiliar situations.
.T.E.S.T is full of both new and classic mechanics, but they are so deep that some still aren't fully revealed. The game will make this clear to you. Again and again you'll see that each rule always has some additional nuance. This can keep going forever. Keys, doors, moving platforms, even jumping will open up from a whole new angle.
You'll be faced with:
– 119 levels
– Time manipulations
– Curved space
– Player-controlled level structure changes
– Transfer of consciousness to another body
– Multiple game zones with unique mechanics
– Classic mechanics in a new form
– Non-linear level map
– Some puzzles are about exploring the game's rules
– Logical puzzles
Plus, for what it's worth, the fate of the human race is at stake. What exactly is happening to it – that's just another riddle waiting to be unraveled. You'll have to collect the facts one by one if you want to discover the truth.
.T.E.S.T is full of both new and classic mechanics, but they are so deep that some still aren't fully revealed. The game will make this clear to you. Again and again you'll see that each rule always has some additional nuance. This can keep going forever. Keys, doors, moving platforms, even jumping will open up from a whole new angle.
You'll be faced with:
– 119 levels
– Time manipulations
– Curved space
– Player-controlled level structure changes
– Transfer of consciousness to another body
– Multiple game zones with unique mechanics
– Classic mechanics in a new form
– Non-linear level map
– Some puzzles are about exploring the game's rules
– Logical puzzles
Plus, for what it's worth, the fate of the human race is at stake. What exactly is happening to it – that's just another riddle waiting to be unraveled. You'll have to collect the facts one by one if you want to discover the truth.
System Requirements
Will my PC run this? →Minimum
Minimum:
- OS *: Windows XP SP2+
- Processor: 1.7 GHz Dual Core
- Memory: 1 GB RAM
- Graphics: NVIDIA GeForce GTX 260, ATI Radeon 4870 HD, Intel HD 3000, or equivalent integrated card
- DirectX: Version 9.0c
- Storage: 3 GB available space
Recommended
Recommended:
- OS *: Windows 7
- Processor: Intel Core 2 Duo at 2.2 GHz, AMD Athlon 64 2.2Ghz
- Memory: 2 GB RAM
- Graphics: NVIDIA GeForce GTX 460, AMD Radeon HD 6850
- DirectX: Version 11
- Storage: 3 GB available space
Supported Languages
English*, Russian*, French*, German*, Portuguese - Brazil*, Simplified Chinese*
*languages with full audio support
*languages with full audio support
Latest news
Patch NotesOfficial
May, 9 update
We received lot of messages about "Invert Mouse Y" option. Here it is. Have fun! Full changelog: Gameplay: - Dialogs common for all levels now proc a bit less often UI: - Added "Invert Mouse Y" optionRead full article on Community Announcements (pavel.veslo.semushin)Patch NotesOfficial
The end of the Early Access! May, 4 update
Final release! Right now! Early Access Phase is finished. Thanks for being with us! It was joy to have you. Thanks to you, our Steam review rate is 95% for now :) Full changelog: UI: - Fixed hotkeys to do random actions in some cases Graphics: - Visual fixes in Unpack, Parcel, Extract, Flip and Spiral levels - Gate signs are now smaller to prevent obscuring vision - Reworked visual decorations on Accuracy level Bugfixes: - Fixed bugged semi-passable glass walls on level Covered Hill - Fixed glass walls on level Exchange that mistakenly appeared hidden in some cases - Fixed bug when you could appear anywhere at random place when rewinding through gate Gameplay: - Fixed one too easy solution for level 2 Cor 11 33 Achievements: - Challenge achievements are still not set. We need to collect more data to make them work. Complete challenges to show us which of them are good to be taken for these achievements.Read full article on Community Announcements (pavel.veslo.semushin)Patch NotesOfficial
119 levels released! April, 27 update
MORE LEVELS! Was: 89 levels out of 120 released Now: 119 levels released, 1 RIP This is the final version of the game. 119 levels. More levels incoming later, but they are not main content of the game. There are also Challenges. Have fun with them. The Early Access stage of the game development is finishing. After a week or so we will give the game Final Release. Surely, still there will be updates, new levels, fixes, etc. Still we need your support as bug reports and valuable feedback. Thanks for being with us in Early Access! Full changelog: New content: - New zones: Space/Space 2 - recommended for everyone. There is something totally new. Lifts 2 - VERY difficult levels, recommended for those who like Lifts Twins 2 - difficult and tricky twin levels, required for plot and main gameplay line Final zone - the main plot ends here. OR NOT? Let's find this out... - Challenges system: beat level V to unlock it. Challenge achievements cannot be earned now. Let's complete as many Challenges as possible and accumulate your achievement counters. On final release we will unlock these achievements for those players with enough completed challenges - New levels in Key Tricks zone - recommended for those who like this zone - Some new dialogs for all levels - Our plot is complete: added some movies to show you the storyline - Secret ending UI: - Fixed hotkeys work - Added confirmations on dangerous hotkey actions - Added quit game button on game pause menu - Added videos section on game pause menu Bugfixes: - Fixed levels Duck, Upkeep and Closer to prevent some solutions seem too easy - Fixed lift signs on Two Pits level - Fixed some texts shown non-localized - Fixed bug when misclicked minimap could lead to unwanted level loading - Fixed bug when just-activated twin activates an object with no command to do it - Precaution measures to prevent some Mac OSX crashes Gameplay: - Multi-sign buttons now shows more informative signs Achievements: - All achievements are now working fi...Read full article on Community Announcements (pavel.veslo.semushin)Patch NotesOfficial
89 levels released! April, 4 update
MORE LEVELS! Was: 63 levels out of 120 released Now: 89 levels out of 120 released Full changelog: New content: - New zones: Slowmo - recommended for those who like twins and/or skywalker levels Lifts - difficult levels, recommended for those who like Lifts and Give a lift levels Exploration - not very complicated levels with strange ideas, aside from main part of the game - New level: ZF. It's in Intro zone, replaced String level. Recommended for everyone. This level may answer some your questions. - More different music Localization: - Added Portuguese-Brazil locale - Added Simplified Chinese locale UI: - Dialogs are now readable after level completion Bugfixes: - Fixed bug when air crash and true juggler achievements were granted by mistake - Fixed bug when rewinding did not change throw charge - Jumper on Invite level no longer allows jumping over walls - Fixed some minor graphics issues - Fixed bug with crazy jumping lifts icons in some casesRead full article on Community Announcements (pavel.veslo.semushin)Patch NotesOfficial
89 levels released! April, 4 update
MORE LEVELS! Was: 63 levels out of 120 released Now: 89 levels out of 120 released Full changelog: New content: - New zones: Slowmo - recommended for those who like twins and/or skywalker levels Lifts - difficult levels, recommended for those who like Lifts and Give a lift levels Exploration - not very complicated levels with strange ideas, aside from main part of the game - New level: ZF. It's in Intro zone, replaced String level. Recommended for everyone. This level may answer some your questions. - More different music Localization: - Added Portuguese-Brazil locale - Added Simplified Chinese locale UI: - Dialogs are now readable after level completion Bugfixes: - Fixed bug when air crash and true juggler achievements were granted by mistake - Fixed bug when rewinding did not change throw charge - Jumper on Invite level no longer allows jumping over walls - Fixed some minor graphics issues - Fixed bug with crazy jumping lifts icons in some casesRead full article on Community Announcements (pavel.veslo.semushin)
