Robot Odyssey: the logic game, where to play it, and what comes next
Robot Odyssey is a programming game from The Learning Company, released in December 1984 for the Apple II and later for the TRS-80 Color Computer and MS-DOS. It was designed by Mike Wallace and Leslie Grimm as a sequel to Rocky's Boots, on an engine written by Warren Robinett. You fall into Robotropolis, an underground city of robots, and climb out through five levels (the Sewer, the Subway, the Town, the Master Control and the SkyWays) by programming the robots Sparky, Checkers and Scanner. Each robot has thrusters, bumper sensors, a grabber and an antenna, and you program it by wiring a circuit inside it from a toolkit of AND, OR, NOT and XOR gates, flip-flops and nodes. In the Innovation Lab you test designs, wire a prototype chip and burn it into a small chip that you can save in the Chip Library and use in the game. If Robot Odyssey is where logic gates first clicked for you, or you have just heard of it, here is how to play it today and where its ideas lead.
Where to play Robot Odyssey today
Several ways keep it alive. Robot Odyssey Rewired, an open-source remake, runs in the browser at robotodyssey.online (version 0.15 when we checked), with a New Lab option for the Innovation Lab and file import and export. The Internet Archive's software library has the MS-DOS version, which runs in the browser through its DOSBox emulator. DroidQuest is a Java clone with all the original levels, and GATE is a free spiritual successor for Windows and macOS. The game holds up because its circuits are real: a bumper wired through a NOT gate to a thruster is genuine combinational logic, and a flip-flop gives a robot a memory, so it can remember which way it was going. (digiwleea is an independent project, not affiliated with The Learning Company, its successors or any of these remakes.)
From Robot Odyssey to how a computer works
Robot Odyssey gives you gates and flip-flops as ready-made parts and a robot to drive. digiwleea starts one level lower and goes further up: in the browser you build NOT and NAND from CMOS transistors, then the other gates, adders, latches, flip-flops, registers, RAM and control logic, and finally an 8-bit CPU that runs a stored program, plus the assembly language behind it, with every part checked against its truth table, a 40+ level course and an AI tutor (Wleea). The idea of burning a prototype into a chip carries over: every part you finish becomes a library part that later levels build on.
| Robot Odyssey | digiwleea | |
|---|---|---|
| Released | 1984 for the Apple II; TRS-80 Color Computer and MS-DOS versions | A browser course, updated continuously |
| Parts | AND, OR, NOT and XOR gates, flip-flops and nodes | CMOS transistors, and every gate and flip-flop you build from them |
| Reusing a circuit | Burn a prototype into a chip and save it in the Chip Library | Save it as a library part |
| Goal | Program robots to escape Robotropolis, through five levels | Build an 8-bit CPU step by step, through 40+ levels |
| How to run it today | Robot Odyssey Rewired or the Internet Archive in a browser; DroidQuest in Java | Any modern browser; the lab and Act I are free |
Robot Odyssey's toolkit, as real circuits
- AND, OR, NOT and XOR gates. Each runs live with its truth table: AND, OR, NOT and XOR, and the CMOS inverter shows what a NOT gate is made of.
- Flip-flops. A robot's memory. The simplest is the SR latch, two gates feeding each other; a T flip-flop toggles on each pulse, which is how a robot can alternate directions.
- Bumpers to thrusters. A sensor driving a motor through gates is combinational logic: the output depends only on the inputs right now. Wall-following needs memory too, which makes it a small state machine.
- Burning chips. Packaging a circuit as a part with pins is how real design scales, from a half adder to a full adder to a 4-bit adder.
No sign-up is needed to start: open the lab and place your first transistor, or read the free theory course. The account (and the AI tutor) are optional.
More comparisons: Games about logic and computers
See for yourself: build a logic gate from transistors in the simulator, then follow the path from sand to an 8-bit CPU.
Open the digiwleea lab →Frequently asked
Can you still play Robot Odyssey?
Yes. Robot Odyssey Rewired, an open-source remake, runs in the browser at robotodyssey.online, and the Internet Archive's software library runs the MS-DOS version in the browser with DOSBox. DroidQuest is a Java clone of the original levels.
What logic gates are in Robot Odyssey?
The game manual's toolkit has AND, OR, NOT and XOR gates, flip-flops and nodes for splitting wires. You wire them inside the robots, or inside a prototype chip in the Innovation Lab and then burn the chip for reuse.
Who made Robot Odyssey?
Mike Wallace and Leslie Grimm designed it, on an engine written by Warren Robinett, and The Learning Company published it in December 1984. It is the sequel to Rocky's Boots.
Is there a game like Robot Odyssey today?
GATE is a free spiritual successor for Windows and macOS. Modern logic games such as Turing Complete and nandgame build up to a whole computer; digiwleea is a free browser course that starts from transistors. Our logic gate games comparison lists them side by side.