Wouter & Ymke 
We’ve played cooperative games where somebody takes charge and starts telling everyone what to do. That’s not going to work in The Safe. You can have a perfectly good idea of where another player should put their card, but you’re not allowed to tell them. You just have to watch.
And sometimes watch them put it somewhere completely different.
The Safe is a cooperative card game about arranging numbers and figuring out which ones are missing. There are five safes to crack, and you need to get through all five missions without failing. We played it with different groups, and it didn’t take long before we started questioning some of the decisions being made around the table. Including our own, unfortunately.
Happy Meeple Games is bringing The Safe to Spiel Essen ’26, and we had the chance to play it beforehand. If you’d like to get a copy, you can also pre-order The Safe here.
👥 1-6 players, ages 8+
⌛ Playing time: 50 minutes
📝 Designer: Robin Van Hoeydonck
🎨 Artwork: Jorian Dane
🏢 Publisher: Happy Meeple Games (review copy provided)
Gameplay Overview
The Safe uses 50 number cards, with values from 0 to 9 in five different colours. At the start of each mission, one card from every active colour is secretly placed beneath its matching safe. Those hidden numbers form the code you’re trying to work out.
Everyone gets three cards. The rest go into a draw pile, and the number of colours used depends on how many people are playing. With one or two players you use three colours, with three or four players you use four, and with five or six you use all five.
On your turn, you play a card into one of the sequences on the table. Each sequence has a limit on how many different colours it can contain, and the numbers have to go in ascending or descending order. Once a sequence has a direction, it stays that way. You can skip numbers, and treat zero as either 0 or 10.
You draw back up to three cards when possible. If you can play a card, you must play one. Keeping a useful card for later isn’t an option when there’s already a legal place for it.
The awkward part is that you can’t tell anyone which numbers or colours you’re holding. You can look at everything that’s been played, but that’s all the information you’re getting from the other players. A sequence might look like a good place for your card, while somebody else is quietly hoping you’ll leave it alone.
Once all the cards have been played, or nobody can make another legal move, it’s time to work out the hidden code. Players with cards left in their hands can reveal their colours, but not their values. They also can’t help identify the missing number for a colour they’re still holding. Everyone else has to work out which numbers are under the safes and which are still in someone’s hand.
You can guess if you have to. There is one exception: if everyone is still holding cards of the same colour, that safe cannot be cracked. Otherwise, the team needs to identify every hidden number correctly to move on.
The first mission is fairly open. Each time you succeed, another restriction is added. A sequence might need a particular colour, accept only even or odd numbers, or be forced into a specific direction. Previous restrictions stay in place, so by the fifth mission there are quite a few things to consider before putting down a card.
Get all five codes right and you’ve won. Make a mistake in any mission and you’re starting over.
Artwork, Components, and Visual Design
The box looks like a safe door, with a large circular lock surrounded by gold details and dark blue panels. There’s a slightly modern security-system look to it as well. I like the combination. Inside are 50 number cards, five safe cards, eleven colour cards and nine restriction cards. There’s no board to unfold. You lay out the colour cards and build the number sequences beneath them, so the playing area grows as the mission goes on.
The number cards are easy to read. Large digits, bright colours and dark backgrounds. When several sequences are spread across the table, it’s easy enough to see what’s already been played without picking cards up to check them.
The restriction cards are also straightforward, using symbols and arrows to show what is allowed. We didn’t have any trouble recognising them once we knew the rules.
The cards feel fine to handle, and everything does its job. Most of the time you’re looking at rows of numbers, not anything that makes you feel like you’re cracking open a vault. The theme is mainly there to give the puzzle a setting.
Our Experience
Our first attempts were a bit too focused on our own hands. We’d look at our three cards, find somewhere they fitted and play one. Job done. Except, of course, that getting rid of a card isn’t necessarily helping the team.
It took us a few missions to pay more attention to what everyone else was doing. Certain sequences kept being used while others were left alone, and we started wondering whether there was a reason for that. Sometimes we thought we understood what another player was trying to achieve. We often didn’t.
There were quite a few moments when somebody played a card and another player clearly wasn’t happy about it. Not that they could say anything. We’d finish the mission, reveal what we’d been holding and discover that a card could have gone somewhere much more useful.
Then again, we also had the opposite happen. A move that looked completely wrong turned out to be perfectly reasonable once we saw the cards that player had available. It’s easy to judge someone else’s decision when you don’t know what they’re working with.
The restrictions made a noticeable difference. In the early missions, we usually had several places to consider. Further on, we’d sometimes look at a hand and realise that almost nothing fitted. There were attempts where we managed to play nearly everything and still couldn’t work out the code without guessing. Others went wrong much earlier.
We did have a few missions where we were convinced we’d failed and then discovered that all our answers were correct. That was a pleasant surprise. It also meant we probably hadn’t understood the situation as well as we thought.
We tried different player counts, and four was our favourite. With fewer players, following the sequences was easier. With more people, there were more decisions to make sense of, and it became harder to understand why someone had played a particular card. Four gave us enough to think about without losing track of what was happening.
One of the things I remember most is how much we talked once a mission was over. During play, we’d sit there trying to interpret each other’s choices. Afterwards, everyone suddenly had an explanation. Somebody would point out the card they’d been stuck with, someone else would explain why they’d used a particular sequence, and we’d start discussing what we should have done differently.
Our Thoughts
I like the idea behind The Safe. You’re trying to get cards out of everyone’s hands, but playing a card isn’t automatically a good thing. You can follow every rule and still make life harder for the next player. That makes the decisions more interesting than simply putting numbers in order.
Not being able to talk about your cards is what makes it work. If we could tell each other what we were holding, I suspect we’d spend most of the game discussing the best placement and then doing exactly that. Here, everyone has to make their own decisions. Even when somebody else is convinced they know better.
It’s not an entirely new approach. The Game and The Crew also make you work together with limited communication. The Safe gives that idea its own twist with the colour limits and missing numbers, and I enjoyed trying to piece everything together.
I also prefer how the restrictions are introduced one at a time. The first mission gives you a chance to understand the sequences before the game starts narrowing your options. We didn’t have much trouble teaching the rules, even to people who don’t play many board games.
There was one aspect of the deduction I wasn’t quite as keen on. Working out a missing number from the cards on the table is satisfying, but reaching a point where we’ve done what we can and still have to guess is less enjoyable. Some of that comes down to our placements, certainly. But sometimes the cards left in people’s hands make it difficult to reach a definite answer.
We enjoyed the challenge, and the discussions afterwards were often as entertaining as the missions themselves. I’d recommend it to groups who like cooperative card games, particularly those who enjoy figuring things out together without being able to discuss every move. Just be prepared for the occasional guess, and for somebody to explain afterwards why the card you were silently complaining about was actually a perfectly sensible choice.
📝 We received a copy of The Safe from Happy Meeple Games.
Going to Spiel Essen ’26? We’re reviewing a selection of this year’s new releases.
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