Rube Goldberg Machine Contest: A Complete Guide

From assembling a hamburger to hammering a nail, the Rube Goldberg Machine Contest (RGMC) has been pushing young engineers to turn simple tasks into wildly complex chain-reaction machines since 1989. Competitors are challenged to design a machine with dozens of linked actions, like marbles dropping into funnels, dominoes triggering levers, and toy cars rolling down ramps.

If you love hands-on engineering, robotics, or building absurd contraptions that work, the Rube Goldberg Machine Contest is one of the most creative competitions you can enter. In this guide, we will cover the contest rules, key deadlines, prizes, and what it takes to build a machine that stands out.

• What Is the Rube Goldberg Machine Contest?
• Rube Goldberg Machine Contest Awards and Prizes
• How to Qualify for the Rube Goldberg Machine Contest
• How to Get into the Rube Goldberg Machine Contest
• How to Win the Rube Goldberg Machine Contest
• Rube Goldberg Machine Contest Previous Winners
• Frequently Asked Questions
• Takeaways

What Is the Rube Goldberg Machine Contest?

The Rube Goldberg Machine Contest is a STEAM competition where teams complete a task by building an intentionally overcomplicated machine with a multi-step chain reaction using everyday materials.

The contest is named after Rube Goldberg (1884–1970), a Pulitzer Prize-winning cartoonist best known for illustrating absurd inventions that perform basic tasks in the most complicated way possible. Today, the competition turns that concept into a hands-on engineering challenge focused on creativity, teamwork, and problem-based learning.

Teams compete in age-based divisions (elementary, middle school, high school, and adult), and machines are judged on creativity, adherence to the theme, and functionality.

For the 2026 competition cycle, the official assigned annual task is “Open a Box.”

In the 2026 cycle, regional contests must run between February 1, 2026 and May 3, 2026, with the RGMC World Championship scheduled for May 16, 2026 at the Tippecanoe County Fairgrounds in Lafayette, Indiana.

Rube Goldberg Machine Contest Awards and Prizes

The 2026 Official Rube Goldberg Machine Contest Rulebook states that trophies are awarded to all 1st, 2nd, and 3rd place finishers in each division at the RGMC World Championship. It also notes that additional prizes (such as certificates, cash, scholarships, and giveaways) may be awarded and are typically announced closer to the event date.

The rulebook specifically lists several judged awards that are based on the interactions of the judges and referees with each team during the World Championship:

The rulebook also specifies sponsor- and audience-based awards, which may vary by year:

Because prize packs and giveaways depend on event sponsors and host arrangements, the exact non-trophy prizes may differ by year and are usually announced closer to competition day.

How to Qualify for the Rube Goldberg Machine Contest

To qualify for the 2026 Rube Goldberg Machine Contest, teams must meet the official rulebook requirements for division eligibility, team registration, and machine specifications.

Eligibility

The 2026 rulebook divides competitors into four official divisions:

• Elementary School Division: Grades K–5
• Middle School Division: Grades 6–8
• High School Division: Grades 9–12
• Adult Division: Anyone age 18+

Homeschool students are explicitly allowed to compete.

Required documents

To compete in a regional qualifier, teams must complete the official registration process and follow the rulebook requirements, including submitting the required step list (the machine’s full sequence of actions). The rulebook also notes that the step list must be submitted digitally at least 24 hours before the event starts.

Contest fees

The rulebook specifies a non-refundable Regional Qualifier Registration Fee of $79 per team for all divisions. The fee is per team, regardless of whether the team has 1 member or 15 members.

The rulebook also states that a limited number of scholarships may be available on a first-come, first-served basis for teams with financial need.

Registration deadline

For the 2026 Rube Goldberg Machine Contest, the official rulebook states that team registration is required in advance for all regional and international events.

The registration deadline is Saturday, March 14, 2026.

Because contests are hosted across different regions, individual event schedules may vary, but teams must still complete official registration by this deadline in order to participate.

How to Get into the Rube Goldberg Machine Contest

Getting into RGMC is straightforward. The steps below follow the same structure outlined in the official 2026 rulebook:

1. Form a team.

Timeline: Fall to early winter

Teams may have 1 to 15 members, and single-member teams are allowed for all divisions. All members must compete in the same division level (no mixed divisions allowed).

Homeschool students are eligible. Each team must also have one adult Coach, who does not count toward the 15-member maximum.

2. Register your team by the official deadline.

Timeline: Winter

Only the Coach should register the team. Your team is not officially registered until you receive a confirmation email.

The non-refundable registration fee for the Regional Qualifier is $79 per team. This must be paid by the official registration deadline of March 14, 2026.

3. Build a machine that completes the 2026 task.

Timeline: Winter to early spring

The 2026 assigned annual task is “Open a Box.”

Machines must meet the contest’s core specifications, including:

• Maximum build size: 10 ft × 10 ft × 10 ft (3.0 m × 3.0 m × 3.0 m)
• Minimum steps: 10 steps (transfers of energy)
• Scored runs: 3 runs total
• Maximum run time: 3 minutes
• Theatrical presentation: 2 minutes or less

4. Submit your official step list.

Timeline: At least 24 hours before your event

Teams must submit their step list digitally at least 24 hours before the event start time. This step list is used by referees to accurately score your machine’s steps.

5. Compete at a Regional Qualifier event.

Timeline: February 1 to May 3, 2026

After registering, teams are assigned a Regional event location. The rulebook states that all Regional events occur between February 1, 2026 and May 3, 2026

If your team does not have a Regional location within 2 hours, the rulebook notes that you may be invited to enter the Remote Regional Contest by submitting a video entry.

To qualify for the World Championship, teams must compete at a Regional Contest. The Adult Division is the only exception, since there are no Adult Regionals.

6. Receive your World Championship invitation.

Timeline: After Regionals

The rulebook states that all teams from every Regional event will receive a World Championship invitation. The 2026 World Championship date is listed as TBD. 

How to Win the Rube Goldberg Machine Contest

The 2026 rulebook makes it clear that teams are scored through both subjective judging (creativity, humor, theme, teamwork) and objective scoring (step count, interventions, rule compliance). To place in the top 3, your machine has to work consistently and be entertaining to watch.

1. Build around the 2026 task early.

The assigned 2026 task is “Open a Box,” and your machine must successfully complete it for your run to count for prizes and awards.

Do not treat the task like an afterthought. Your final step should be engineered first, then reverse-built backward so the entire machine is leading cleanly toward the box-opening moment.

2. Keep your machine within the 10 ft x 10 ft x 10 ft boundary.

The maximum machine size is 10 ft (W) × 10 ft (L) × 10 ft (H), and the entire machine must stay inside the marked boundary at the event. Even slightly exceeding the boundary can trigger a 20-point penalty.

Build modularly and measure your footprint before contest day. A machine that barely fits at home often fails once it is reassembled on-site.

3. Aim for 10+ steps, but keep your step count under control.

Your machine must have a minimum of 10 steps (transfers of energy). There is no official maximum step count, but the rulebook recommends keeping total steps under 125.

Teams lose points when the machine becomes too cluttered to follow. Judges want large, visible steps that make sense from 8–10 feet away.

4. Submit a clean step list and count steps correctly.

Step list accuracy matters because referees score based on your submitted sequence. The step list must be submitted digitally at least 24 hours before the event.

A step is defined as the transfer of energy from one object to a different object. For example, a domino chain counts as one step, no matter how many dominoes fall.

If your machine skips steps during a run, only the steps that successfully occur will count toward your scored total for that run.

5. Design for three consistent runs, not one perfect run.

RGMC scoring is based on three machine runs, and reliability matters because judges watch how your team improves across runs.

If your first run fails, your goal should be to reduce interventions on runs #2 and #3. A machine that goes from 5 interventions to 2 will score better than a machine that collapses as the event progresses.

6. Avoid interventions because they directly damage your score.

Interventions are physical touches used to keep the machine running after the run begins. Multiple touches on the same step during the same run still count as one intervention, but high intervention totals will destroy your competitiveness.

The rulebook allows a maximum of 10 total interventions across all 3 runs before reaching the maximum intervention penalty.

7. Make your presentation count.

Before your first run, your team is allowed a theatrical presentation of 2 minutes or less. This is where theme, humor, costumes, and storytelling matter.

A silent machine run with no narrative almost always scores lower than a machine that feels like a performance.

8. Use sound, lighting, and visuals to support your theme.

The rulebook explicitly encourages teams to use music, sound effects, and visuals to engage the audience. LED light strips, arrows that show machine flow, and painted color coding can make your steps easier to follow and more memorable.

You are also being judged on entertainment value rather than on engineering alone.

9. Do not rely on marbles and dominoes.

The rulebook states that marble runs and domino topples are not considered creative in the contest, and standard dominoes are among the most common failure points because resetting them between runs is unreliable.

If you want a “domino effect,” use larger objects instead, like books, binders, bottles, or DVD cases.

10. Do not break the outside assistance rule.

Only team members may build and set up the machine at the contest. Parents, teachers, and non-team members are not allowed to troubleshoot or reset the machine once the team arrives at the venue. The rulebook states this can trigger an Outside Assistance penalty of -20 points.

If you want help transporting heavy pieces, that is allowed. But if a non-team member fixes your mechanism, your score will take a direct hit.

11. Use PLCs only for aesthetics, never as a failsafe.

Programmable Logic Controllers (PLCs) and microcontrollers are allowed only for aesthetic effects such as lighting, sound, or scenery movement. If a PLC is used to continue the chain reaction sequence or act as a failsafe, the rulebook states your team will be disqualified.

If your design depends on automation to prevent failure, it is not RGMC-compliant.

12. Reset efficiently.

Teams are guaranteed 15 minutes of reset time between runs. If your reset exceeds 15 minutes and judges are waiting for your next run, the rulebook states you may incur a delay-of-game penalty of -5 points per occurrence.

Assign 3 to 4 teammates as the reset crew and rehearse the reset process like it were part of the machine itself.

Rube Goldberg Machine Contest Previous Winners

Below are a few examples of past Rube Goldberg Machine Contest winners, so you can get a clearer idea of what a strong, competition-level machine looks like in practice:

Frequently Asked Questions

1. What do students submit for the Rube Goldberg Machine Contest?

Students submit a completed Rube Goldberg machine that performs the official annual task. For the 2026 cycle, the assigned task is “Open a Box.” Teams must also submit an official step list (the full sequence of actions in the machine) and upload it digitally at least 24 hours before the contest event.

2. How is a machine evaluated in the Rube Goldberg Machine Contest?

Machines are evaluated through a combination of judging and scoring during the competition event. Teams are scored across three runs, and their final performance depends on factors such as successful task completion, step execution, and the number of interventions needed to keep the machine running.

Judges and referees also evaluate teams for additional awards such as the Creativity Award, the Most Hilarious Award, the Artistry Award, and the Perseverance Award.

3. How is the Rube Goldberg Machine Contest different from other STEM competitions?

Unlike science fairs or research competitions, RGMC is not based on writing a paper or presenting experimental results. Instead, it is a performance-based competition focused on building a working chain-reaction machine under strict rules, including a maximum size of 10 ft × 10 ft × 10 ft, a minimum of 10 steps, and a maximum run time of 3 minutes.

The contest also includes a theatrical component, with teams allowed a presentation of two minutes or less before their first run.

4. How do colleges view winning the Rube Goldberg Machine Contest?

Winning RGMC is a strong extracurricular credential because it shows hands-on engineering ability, teamwork, and iterative problem-solving under time pressure. Since machines are built through real-world testing, debugging, and redesign, a top placement signals that a student can execute a long-term technical project. It is especially relevant for students applying to majors like engineering, robotics, and applied physics.

Takeaways

• The 2026 Rube Goldberg Machine Contest assigned task is “Open a Box,” and machines must successfully complete this task to be eligible for prizes and awards.
• Teams must register in advance, and the official registration deadline for the 2026 season is Saturday, March 14, 2026, with a $79 non-refundable registration fee per team.
• Regional Qualifier events take place between February 1, 2026 and May 3, 2026, and teams typically must compete in a Regional event to receive a World Championship invitation.
• Machines must follow strict build rules, including a maximum size of 10 ft × 10 ft × 10 ft, a minimum of 10 steps, and a maximum run time of 3 minutes, with scoring based on three official runs.
• If you want to highlight competitions like RGMC strategically in your college applications, working with a college admissions expert can help you frame your project in a way that strengthens your extracurricular profile and stands out to top schools.