Compare HA/CK prices across trusted key stores and find the best deal. Developed by Gampixi. Published by Gampixi. Released on 2/14/2019. Available on PC, Mac, Linux. Genres: Indie.

Portal's ghost lives in this tiny solo-dev puzzle, but the leaderboard hooks are what keep you honest. Short, sharp, and worth a run if hacking-themed puzzlers scratch your brain the right way.

I have a soft spot for games built by one person who clearly loves a specific thing and just went and made it. HA/CK is exactly that kind of project: a first-person puzzle game from a self-taught solo developer out of Latvia, built around the idea that you are a deep learning model being put through a test suite by someone called The Programmer. The framing is lean and the atmosphere is all function, no fat. There is something quietly absorbing about that. The core mechanic is point-and-click interaction from a first-person perspective. Hackable objects in the environment, things like lifts, access panels, and security cameras, display a green ring in your vision when you focus on them, signaling a vulnerability you can exploit. Getting through a level means reading that chain of interactions correctly and triggering them in the right order. Early on it plays like a gentle handshake. The training sequences ease you in slowly, and then the later levels start folding that logic in on itself until you are genuinely pausing, looking around, and rethinking what you thought was obvious. There are six levels in total, so the runtime is short, but the design does not waste any of them. Community comparisons to Portal are fair but should be tempered. HA/CK does not have Portal's production scope or its sardonic wit. What it does have is a clean ruleset and the honesty to let you sit with a puzzle until you work it out rather than telegraphing the solution. The global leaderboards and dedicated speedrun mode are the real replay engine here. If you are the kind of player who finishes a level and immediately wants to shave thirty seconds off your time, that loop is genuinely satisfying. If you are a purely story-first player, you will see everything in a single sitting and feel good about it for an hour or two afterward. A few caveats worth naming: the review count on Steam is tiny, the Linux build has historically shown some Unity UI quirks with certain display modes, and this is not a game with narrative payoff or branching depth. It knows what it is. For a solo debut, the intentionality is clear, and the puzzle logic holds together. I would rather spend an afternoon with something this focused than wade through a bloated puzzle-platformer that outstays its welcome by four hours. Kai, Scout Team

HA/CK

HA/CK

Feb 14, 2019Gampixi
GamerScout Says

Portal's ghost lives in this tiny solo-dev puzzle, but the leaderboard hooks are what keep you honest. Short, sharp, and worth a run if hacking-themed puzzlers scratch your brain the right way.

PCMacLinux
Best Price Available
€1.62
at Kinguin
Lowest tracked: €1.62
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GamerScout Verdict

Best for puzzle fans who like clean mechanics, short sessions, and the itch to beat their own time on a leaderboard.

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€1.62
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StandardEurope (EU)Steam KeyKey
€2.00
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StandardGlobalSteam KeyKey
€2.09
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StandardEurope (EU)Steam KeyKey
€8.99
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Price History

Lowest tracked
€1.6224 Aug 2026
Current best
€1.62
Lowest since we started tracking
Keyshops
€1.61€1.66€1.70€1.755 Jun28 Jun22 Jul14 Aug6 Sept
5 Jun — 6 Sept
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Screenshots & Media

About HA/CK

I have a soft spot for games built by one person who clearly loves a specific thing and just went and made it. HA/CK is exactly that kind of project: a first-person puzzle game from a self-taught solo developer out of Latvia, built around the idea that you are a deep learning model being put through a test suite by someone called The Programmer. The framing is lean and the atmosphere is all function, no fat. There is something quietly absorbing about that. The core mechanic is point-and-click interaction from a first-person perspective. Hackable objects in the environment, things like lifts, access panels, and security cameras, display a green ring in your vision when you focus on them, signaling a vulnerability you can exploit. Getting through a level means reading that chain of interactions correctly and triggering them in the right order. Early on it plays like a gentle handshake. The training sequences ease you in slowly, and then the later levels start folding that logic in on itself until you are genuinely pausing, looking around, and rethinking what you thought was obvious. There are six levels in total, so the runtime is short, but the design does not waste any of them. Community comparisons to Portal are fair but should be tempered. HA/CK does not have Portal's production scope or its sardonic wit. What it does have is a clean ruleset and the honesty to let you sit with a puzzle until you work it out rather than telegraphing the solution. The global leaderboards and dedicated speedrun mode are the real replay engine here. If you are the kind of player who finishes a level and immediately wants to shave thirty seconds off your time, that loop is genuinely satisfying. If you are a purely story-first player, you will see everything in a single sitting and feel good about it for an hour or two afterward. A few caveats worth naming: the review count on Steam is tiny, the Linux build has historically shown some Unity UI quirks with certain display modes, and this is not a game with narrative payoff or branching depth. It knows what it is. For a solo debut, the intentionality is clear, and the puzzle logic holds together. I would rather spend an afternoon with something this focused than wade through a bloated puzzle-platformer that outstays its welcome by four hours.

Kai
Kai · Scout Team

Indie & narrative

Tags

singleplayerachievementscloud-savestier:sub-5Speedrun-FriendlyGlobal LeaderboardsPoint-and-Click InteractionEnvironmental HackingSolo DevShort-Form PuzzleTest-Chamber Structure

System Requirements

Minimum

OS
Windows 7
Memory
4 GB RAM
DirectX
Version 11
Storage
1 GB available space
Graphics
Graphics card with Shader Model 5 support and at least 1GB dedicated memory
Processor
Dual Core CPU @ 2.4GHz

Recommended

OS
Windows 7
Memory
8 GB RAM
DirectX
Version 11
Storage
1 GB available space
Graphics
Graphics card with Shader Model 5 support and at least 2GB dedicated memory
Processor
Quad Core CPU @ 3.0GHz

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Game Info

Developer
Gampixi
Publisher
Gampixi
Release Date
Feb 14, 2019

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Best price€1.62
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Frequently asked questions about HA/CK

How much does HA/CK cost?

As of 5 September 2026, the cheapest in-stock offer for HA/CK is €1.62 at Kinguin, out of 4 live offers we track across verified key stores. Prices change daily — the table on this page is refreshed continuously.

Where can I buy HA/CK cheapest?

The lowest in-stock price we track for HA/CK is €1.62 at Kinguin (5 September 2026). We compare 4 live offers from verified key stores — the full table with every store and its trust score is on this page.

What platforms is HA/CK available on?

HA/CK is available on PC, Mac, Linux.

When was HA/CK released?

HA/CK was released on 14 February 2019.

Who developed HA/CK?

HA/CK was developed by Gampixi.