Gizmos and the Chain Reaction Engine That Teaches the Genre Perfectly

Gizmos At A Glance

I have played Gizmos forty-three times since it arrived on our family table in 2019. That sounds like a lot until you realise it averages out to about once a month, which tells you everything about how this game works in practice. It is not the sort of thing you marathon through six times in a weekend and then forget about. Instead, it keeps coming back because it hits that sweet spot where the rules are simple enough for anyone to follow, but the combinations are interesting enough to keep adults engaged.

What makes this particularly remarkable is that Gizmos manages to teach engine building, which is traditionally one of the more intimidating game mechanisms, through what feels like playing with marbles and gadgets. The theme is competing at the Great Science Fair (CMON Rulebook PDF), which sounds a bit silly until you see how perfectly it matches the satisfaction of building increasingly elaborate contraptions that do more and more spectacular things.

The genius of Phil Walker-Harding (CMON Rulebook PDF) is that he created an engine builder that feels like actual engineering rather than abstract point manipulation. When your gizmos start triggering each other in satisfying cascades, it genuinely feels like you have built something clever rather than just optimised some numbers.

## What Gizmos Really Is

At its heart, Gizmos is about building an engine of cards that trigger each other to create increasingly powerful chain reactions (Zen Of Design). You are collecting coloured energy marbles from a gumball style dispenser (Zen Of Design) to power increasingly sophisticated inventions that make your future turns more efficient.

Each turn, you choose one of four actions. File a patent on a card from the display, which lets you build it later for a discount. Build a gizmo by paying its energy cost and adding it to your tableau. Pick energy marbles from the dispenser. Or research by drawing cards from the deck to find something useful. It sounds straightforward, and it is, but the interesting bit happens when your gizmos start working together.

Every gizmo has a trigger condition and an effect. Some give you extra marbles when you pick certain colours. Others let you build cheaper or give you bonus actions. The best ones trigger when other gizmos activate, creating these lovely moments where taking one marble suddenly cascades into three more actions and a free build.

The beauty is in how transparent it all feels. When your gizmos trigger, you can see exactly what is happening and why. There is no mysterious scoring phase or hidden information. Your engine is right there on the table, and when it fires, everyone can appreciate the clever connections you have built.

## Teaching Engine Building Without the Intimidation

Most engine builders suffer from what I call the blank stare problem. You explain the rules, everyone nods along, and then they sit there paralysed by choice, completely unable to see how any of the available cards might work together. Gizmos solves this beautifully by making every effect immediate and visible.

When a child builds their first upgrade gizmo and immediately gets to pick an extra marble, they understand instantly what happened and why it was useful. When that extra marble triggers another gizmo that gives them a discount on their next build, they can see the chain reaction happening. There is no waiting three rounds to see if their strategy will pay off. The feedback is instant.

This is particularly important for families where you might have quite different levels of gaming experience around the table. The more experienced players can start seeing complex combinations and long term engine planning, whilst newer players can focus on the immediate satisfaction of making their gizmos do cool things. Everyone is playing the same game, but at their own level of strategic depth.

I have watched seven year olds grasp the basic concept within minutes, not because the game is simple, but because the cause and effect relationships are so clear. Build the gizmo that gives you marbles when you research, then research more often. Build the gizmo that makes red energy cheaper, then focus on red gizmos. The connections are obvious once you see them in action.

## The Marble Dispenser Magic

The energy collection system deserves special mention because it is both functional and delightful. Energy is gathered as marbles from a gumball style dispenser (Zen Of Design), which means you are physically handling satisfying, colourful objects rather than moving wooden cubes around a board.

This sounds like a gimmick, but it serves several important purposes. First, it makes the game feel more tactile and engaging, particularly for children who learn better through physical manipulation. Second, it provides just enough randomness to keep things interesting without making the game feel chaotic. You can see what marbles are coming up in the dispenser, so you can plan ahead, but you cannot control exactly what will be available on your turn.

Most importantly, the marble system makes resource collection feel rewarding rather than tedious. Instead of just taking your allotment of wooden cubes, you are fishing specific colours out of a dispenser, which feels more like you are actually gathering the components you need for your inventions.

The physical satisfaction of the marbles also helps with the chain reaction moments. When your engine triggers and you get to collect several marbles in sequence, the tactile pleasure reinforces the mechanical satisfaction. It feels like your contraption is actually producing something tangible.

## Building Complexity Gradually

One of Gizmos’ greatest strengths is how it reveals its depth gradually. Early games feel quite straightforward. You build some gizmos, they give you some benefits, you score some points. But as you play more, you start noticing subtler interactions and longer term strategies.

The game has three levels of gizmos, with level one cards being simple and cheap, and level three cards being complex and expensive (UltraBoardGames). The end game triggers when someone builds their fourth level three gizmo or reaches sixteen gizmos total (UltraBoardGames), which creates interesting timing decisions about whether to go wide with lots of simple gizmos or deep with fewer powerful ones.

What I particularly appreciate is how the game rewards different approaches without making any of them feel obviously superior. Some players love building massive engines with dozens of triggers. Others prefer lean, efficient builds focused on high value gizmos. Both can work, depending on what cards are available and how the game develops.

The filing system adds another layer of planning. You can reserve gizmos from the display for later, which means you are not just reacting to what is available now, but thinking ahead about what you might want to build in a few turns. When you take a gizmo from the display, it is immediately replaced with a new card from that level (Gizmos Rulebook), so the available options are constantly shifting.

## Why This Works So Well for Families

Gizmos succeeds as a family game because it respects everyone at the table. Younger or less experienced players can focus on building cool gizmos that do interesting things without worrying too much about optimal efficiency. More strategic players can dive into complex engine optimization and long term planning. Everyone is engaged, nobody feels left out.

The play time helps enormously. At forty to fifty minutes (CMON Rulebook PDF), it is long enough to feel substantial but not so long that attention starts wandering. I have never had a game drag or overstay its welcome, even with mixed age groups.

The turn structure also keeps everyone involved. Because gizmos can trigger on other players’ turns when they take certain actions, you are always watching what everyone else is doing. There is no zoning out between your turns because someone else’s marble collection might trigger your converter gizmo.

Perhaps most importantly, Gizmos avoids the common family game trap of having obvious optimal moves that make skilled players feel like they should deliberately play suboptimally to keep things fair. The combination of card variety and marble randomness means there are usually several reasonable options each turn, so more experienced players can focus on finding interesting combinations rather than holding back.

## Is Gizmos Still Relevant Today?

Six years after its 2018 release (BoardGameGeek), Gizmos holds up remarkably well. The engine building genre has certainly evolved, with games like Space Base and Wingspan offering their own takes on tableau building, but none of them quite capture the same combination of accessibility and satisfaction.

The physical components remain appealing. The marble dispenser still draws gasps of delight from new players, and the gizmo cards have clear, intuitive iconography that makes the game easy to parse even after months between plays. The build quality is solid enough that our copy shows minimal wear despite dozens of plays.

If anything, Gizmos feels more relevant now than it did at release. As more families discover modern board games, there is increasing demand for designs that can bridge the gap between simple party games and complex strategy games. Gizmos sits perfectly in that middle ground, offering genuine strategic depth without overwhelming newcomers.

The recommended age of fourteen plus (The Opinionated Gamers) feels conservative in practice. I have successfully played with children as young as eight, though they benefit from a bit of guidance in their first game or two. The key is not worrying about optimal play and just letting them enjoy building cool contraptions.

## Why You Should Play Gizmos with Your Family

If you want to introduce engine building to players who have never experienced it before, Gizmos provides the perfect gentle introduction without sacrificing the satisfaction that makes the mechanism compelling.

If you have children who love building things or figuring out how gadgets work, Gizmos captures that same creative problem solving energy in a structured game format that teaches planning and resource management along the way.

If you are looking for a game that scales gracefully from casual family fun to more serious strategic thinking, Gizmos adapts beautifully to the mood of the table without requiring different rules or variants.

If you want something that feels fresh each time you play but does not require learning new rules or setup procedures, the card variety and marble randomness ensure that no two games feel the same whilst keeping the learning curve manageable.

Most importantly, if you want a game that creates those wonderful moments where everyone around the table goes “ooh” when someone’s engine fires perfectly, Gizmos delivers that satisfaction reliably and repeatedly.

## Verdict

Gizmos earns an 8/10 as a family gateway into engine building. It is not the deepest or most complex engine builder available, but it might just be the most successful at making the core concepts accessible and enjoyable for players of all experience levels.

After forty-three plays, I am still discovering new gizmo combinations and still getting that little thrill when a well-planned engine cascades through multiple triggers. More importantly, I am still confident recommending it to families who want something more engaging than roll-and-move games but less intimidating than heavy strategy games.

Gizmos proves that you can teach sophisticated game mechanisms without sacrificing fun or accessibility. It respects its players enough to offer real decisions and meaningful choices, whilst being forgiving enough that mistakes are learning opportunities rather than game killers.

See our breakdown of the top 10 gateway games for families

Janet

Janet’s a librarian from Bristol who swapped bedtime stories for board games. She writes about family-friendly titles that actually get played, balancing fun, fairness, and kids who can’t stand losing. Her motto: no game should last longer than a child’s attention span.