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Unboxing the Cryptic Killer
Unravel the mystery of a cryptic box in this 2-player co-op puzzle game. Join forces as two detectives, solve cooperative puzzles, communicate effectively, crack the codes and outsmart the killer.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.
What reviewers agree on
58 of the 100 reviews raise this.
“Great game! I played it with my partner and we had an amazing time. Interesting story, good puzzles, and a nice atmosphere 10/10”
“Very fun and enjoyable puzzle game, but its extremely short!”
22 of the 100 reviews raise this.
“One of the best co op puzzle games. PRO TIP: Do it with a friend that you can yell at and they won't take it personally!”
“Great online Co-op escape game. Fun for long distance Date Nights. Hope to find more like it”
“Played with a friend. We really enjoyed this. You are each given different pieces of the puzzle and have to work together to solve them. Most of the puzzles are not timed so it is not stressful. Loved it so much we are…”
14 of the 100 reviews raise this.
“Delightful game! there were only a few puzzles that really had me and my friend stumped, but the rest were solvable with few leaps in logic. And the hints helped get us on track. Very worth it in my opinion, got both…”
“Played with a friend. We really enjoyed this. You are each given different pieces of the puzzle and have to work together to solve them. Most of the puzzles are not timed so it is not stressful. Loved it so much we are…”
“Fun, escape-room-esque cooperative puzzles. About 2 1/2 hours of play for a pair of experienced puzzlers -- we found the difficulty to be medium-easy, with just a few that challenged us, perfect for a chill date night.…”
7 of the 100 reviews raise this.
“Jogo muito divertido com bons puzzles. A arte do jogo é bonita e o sistema de cooperação funciona muito bem. Meu principal problema com o jogo é a inconsistência na dificuldade de alguns puzzles, mas a possibilidade de…”
“It's great fun and a great design, but certain puzzle pieces are nonsense. Blue mixed with yellow mixed with black equals... RED? In the end I found myself wishing the game was longer. Very fun two player game!”
7 of the 100 reviews raise this.
“Great game! I played it with my partner and we had an amazing time. Interesting story, good puzzles, and a nice atmosphere 10/10”
“Had a lot of fun with this one! The story was better than I expected for a co-op puzzle game like this”
“such an awesome game!! took me and fine ♥♥♥♥ 2 hours to complete and some levels genuinely stunned us, very fun on the brain and the story and quality were awesomememmemememmeeee :p”
15 of the 100 reviews raise this · 13 of them still recommend the game.
“Very fun and enjoyable puzzle game, but its extremely short!”
“Solid experience, only takes a few hours but its a good time with a friend. Very good sense of humor.”
“The price of the game does not justify the content. It is a game with 0 replay ability because the codes are hard coded (rather than randomizing shapes and numbers). The puzzles, albeit sometimes interesting, take about…”
7 of the 100 reviews raise this · 5 of them still recommend the game.
“It's a fun little game where you kinda get lost cause lack of indications. Last part could've been harder imo.”
“The one friend that played this with me got snappy because I had trouble with some math. I don’t have any other friends to play this with 😢 and math is dumb.”
“Jogo muito divertido com bons puzzles. A arte do jogo é bonita e o sistema de cooperação funciona muito bem. Meu principal problema com o jogo é a inconsistência na dificuldade de alguns puzzles, mas a possibilidade de…”
7 of the 100 reviews raise this · 1 of them still recommend the game.
“The price of the game does not justify the content. It is a game with 0 replay ability because the codes are hard coded (rather than randomizing shapes and numbers). The puzzles, albeit sometimes interesting, take about…”
“This game is hotdog water. HOLY Guacamole. I love puzzle games but this one is terrible”
“The puzzles are not very original and become repetitive quite quickly. Sometimes they are too easy, other times tedious and unintuitive. The game is also very short. The main positives are the low price and the nice art…”
4 of the 100 reviews raise this · 3 of them still recommend the game.
“The price of the game does not justify the content. It is a game with 0 replay ability because the codes are hard coded (rather than randomizing shapes and numbers). The puzzles, albeit sometimes interesting, take about…”
3 of the 100 reviews raise this · 3 of them still recommend the game.
“It's a fun little game where you kinda get lost cause lack of indications. Last part could've been harder imo.”
“Got this game when it was on sale for my girlfriend and I. It was a great way to connect while we were long-distance and since it saves in between rooms, we were able to do it over a few weeks when we had time. The only…”
“This was a good game to play with a partner. Puzzles were fun although the numbers were a bit unclear with the join the dots.”
Counted across 100 English reviews, sampled to match this game's 90.1% positive rating · as of 2026-05-13
“Quick co-op puzzle game. It's nothing outstanding, but it's fun 5-ish hour game. There are some pretty unique puzzles in there :)”
— a player, Steam review · 7 hrs played“This was very fun. I like the puzzles and it was engaging without being stressful. the voices were funny.”
— a player, Steam review · 4 hrs played“Amazing short co-op puzzle games. The art style is top-notch, and the puzzles are very intuitive, unique, and challenging without being too frustrating. It took my friend and me about 6 hours to complete 100% of the achievements.”
— a player, Steam review · 6 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-05.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-10). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Unboxing the Cryptic Killer - Patch 1.4.0
New features: Added Japanese localization Added Korean localization
Sales in Russia suspended due to connection issues
Detectives, Due to ongoing technical issues affecting connections to our servers, we’ve decided to suspend sales of our games in Russia. We don’t think it’s fair to sell a game in a region where we ca
Unboxing the Cryptic Killer - Patch 1.3.0
We’ve just released Patch 1.3.0 for Unboxing the Cryptic Killer. This update addresses connection issues experienced by some players. You can now manually select a server when creating a game, instead
Unboxing the Cryptic Killer - Patch 1.3.1
Detectives!Unity (the game engine we use) recently released an important security patch. It was discovered that all versions of the engine (and by extension, our games) were affected by a specific vul
Our next game, Parallel Experiment, launches on March 6, 2025!
We’re beyond excited to share that our next game, Parallel Experiment, will be launching on March 6, 2025! This game is truly special, and we’re incredibly proud of what we’ve achieved. While we’re st
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-13.
| Genres | Adventure, Casual, Indie |
| Player tags | Puzzle · Online Co-Op · Escape Room · Point & Click · Mystery · Adventure · Casual · Exploration · 2D · Cartoony · Co-op · Comic Book (SteamSpy community voting) |
| Features | Multi-player · Co-op · Online Co-op · Family Sharing |
| Languages | English * , French, Italian, German, Indonesian, Polish, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America, Turkish * |
| Achievements | 13 |
| Official site | https://elevenpuzzles.com/unboxing-the-cryptic-killer/ |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS *: Windows 7 Processor: Intel core 2 DUO 2GHz+, AMD Athlon TMX2 2.2GHz+ Memory: 4 GB RAM Graphics: Intel Hd graphics 520 Network: Broadband Internet connection Storage: 2 GB available space Additional Notes: A working PC-compatible microphone