RETRO-REVIEW · 2026-06-09
The Incredible Machine (1993) — The Toy Box That Made Rube Goldberg Playable
How a physics puzzle assembled in nine months in the spring of 1992 was revived on Steam in 2014 by the same hands
Introduction
This is a work of 1993. Across the DOS screen are scattered ramps and conveyor belts, candles, balloons, and a single cat. Developed by Dynamix and published by Sierra On-Line, the puzzle called The Incredible Machine asked players to combine the supplied parts on screen so as to accomplish some seemingly trivial goal—'put the ball in the box,' 'start the mixer and turn on the fan'—by the most elaborately roundabout means.
A sample of the 'construction kit' parts — ball, ramp, fan, balloon, conveyor belt. Under fixed physical laws, the only question is how you arrange and chain them together.
The goals themselves are childish. But the heart of the work lies in the fact that you must design the path to them yourself. The player places parts and reads ahead, in the mind, how they will chain together under gravity and inertia. In short, it turned the cartoonist Rube Goldberg's joke—dispatching a simple task by a needlessly complicated machine—into a device you could actually play.
Taking this 1993 physics puzzle as the doorway, this essay traces where the play of assembling contraptions came from and how it was passed down to Steam today. What I find most striking is a rare continuity of lineage: the very people who made this work released a sequel of the same philosophy twenty-one years later.
The Context of the Era
The origins reach back surprisingly far. According to the English Wikipedia, the game was originally to be developed by Electronic Arts for the Commodore 64 in 1984. But Dynamix prioritized the Amiga title Arcticfox at the time, and the project was shelved. Actual development did not begin until the spring of 1992, after a gap of eight years. The record states that the programmer Kevin Ryan assembled this machine almost single-handedly in just nine months on a small budget of $36,000.
The year 1993 was a time when PC gaming was rushing headlong toward CD-ROM and multimedia. Amid the vogue for flashy movies and digitized live footage, this work, conversely, competed on nothing but the plain physics of gears and balls. The producer was Jeff Tunnell; the developer was credited as Jeff Tunnell Productions; distribution was handled by Sierra, then a giant of puzzle-adventure publishing. That same year an expanded edition, The Even More Incredible Machine, doubled the parts and levels to 160.
Critics of the day saw this plainness clearly. In 1993 the American magazine Computer Gaming World called the 80 puzzles 'a blast,' yet singled out the goalless 'Free Form Mode' as the finest feature, writing that 'the curious, tinkering 10-year-old is re-awakened.' The work sold over 800,000 copies, and in 1996 the same magazine ranked it 62nd in its '150 Best Games of All Time.'
Mechanics
The mechanics split into two layers. The lower layer is physics simulation. Gravity pulls, balls roll downhill, conveyor belts carry objects, fans push balloons aloft. Cats chase mice; trampolines bounce things back. All these behaviors are deterministic—the same arrangement always yields the same result. The player manipulates only the placement of parts; once you press 'run,' all that remains is to watch the machine you built proceed on its own according to physical law.
The 'construction kit' idea. Arrange a fixed landscape and a limited set of parts — ball, ramp, seesaw, basket — so a gravity-driven chain reaction carries the ball to the goal (★). The physics is constant; only the assembly is the solution.
The upper layer is constraint. In each level, the kinds and quantities of parts you may place are fixed in advance, and immovable fixed parts are also positioned. With limited pieces, the player reads the given terrain and designs a single chain to the goal. What lies here is exactly what modern puzzle theory calls 'composition under constraint.' If Sokoban is sequential logic, pushed one move at a time, this work demanded a parallel logic: build the whole machine first, then run it all at once to verify.
And the greatest invention is the goalless 'Free Form Mode.' Here no clear condition exists. The player simply lays out whatever parts they like, in whatever quantity, building absurd machines to watch. To provide, within a puzzle, a space with no problem to solve—this idea of the 'sandbox' lifted the work from a mere problem set to a tool for creation. The mechanism of this contraption puzzle was deemed original enough that, through the sister title Sid & Al's Incredible Toons, Tunnell and colleagues even obtained a U.S. patent (No. 5,577,185).
Legacy to the Present
What this work demonstrated historically is that 'the play of predicting physics' and 'the play of composing a device under constraint' can coexist on a single screen. Atop a deterministic physics engine it laid the constraint of limited parts, then added the margin of free creation. This three-layer structure is the very skeleton of the physics-and-contraption puzzle genre that would later bloom on Steam. Games that span bridges to bear loads, and games that arrange gears and molecules to optimize a process, all trace back to this form of 'build it, run it, watch it.'
And in this lineage there is one firm line that requires no speculation. Across 2013 to 2014, Contraption Maker was released on Steam by Spotkin, a studio founded by the work's own creator, Jeff Tunnell. Its development reunited the very makers of the era: the original programmer Kevin Ryan, and Brian Hahn. The official release of July 7, 2014 carried over 200 puzzles, more than 100 kinds of parts, and creation-sharing via Steam Workshop.
What matters here is that this is not a 'successor influenced' by outsiders, but a legitimate sequel by the authors themselves. A current distinct from the Baba Is You and Patrick's Parabox this site so often treats—a lineage that 'assembles physics' rather than 'rewrites rules'—was handed down by the same hands across twenty-one years. The philosophy poured into the 1993 toy box did not spread by imitation; it was connected by its very makers to the modern distribution of Steam Workshop. A lineage is often thus closed, and reopened, by its own author.
References
Sources referenced in this article:
・Wikipedia: The Incredible Machine (1993 video game) (development, budget, sales, reviews, awards)
・Wikipedia: The Incredible Machine (series) (the series and developer credits)
・Wikipedia: Contraption Maker (Spotkin, reunion of original creators, 2014 Steam release)
・Steam: Contraption Maker (official store page, parts, Workshop)
・TechSpot: Contraption Maker is the spiritual successor to The Incredible Machine
・The Internet Archive: The Incredible Machine (playable preservation)
・Computer Gaming World (April 1993): Tinkering with Sierra's The Incredible Machine
In Closing
What The Incredible Machine of 1993 demonstrated historically is the fact that a thinking puzzle can be established by sandwiching the 'play of prediction'—physics simulation—between two frames: constraint and free creation. There is not one solution; the paths to a goal are countless. This coexistence of 'many solutions' and 'sandbox' was a bold wager for its time, and a correct one. The figure of 800,000 copies, and nearly half a century of imitation in its train, bear witness to that.
What I want to set down last, as a historian, is the beauty of how this work's lineage was closed. Many retro works are interpreted, varied, and handed down by later others until their original form is lost. But this one, after twenty-one years, returned to Steam by the hands of its very makers. The small machine assembled in nine months in the spring of 1992 was, after passing through a history of imitation, set running once more by its own creators. The contraption is still moving.
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