Questions & Answers
At this page we will publish frequently asked and important questions related to the WRO® games. The answers on this page should be seen as additions to the rules and will be used for the WRO International Final. Be aware that in your country local competitions may follow slightly different rules. Always use the rules provided by your National Organizer.
RoboMission
All age groups
- The maximum allowed battery voltage has been updated to 14.8V (nominal value).
- The 4A current limit has been removed (General Rule 5.2.4).
- The maximum battery capacity remains unchanged at 6,000 mAh (General Rule 5.2.2).
Elementary
No Q&A yet.
Junior
No Q&A yet.
Senior
No Q&A yet.
RoboSports
Correct answer (24th of April 2026)
This year we allow any number and type of controllers. (Rule 8.12 does not apply this year)
Wrong earlier published answer:
While in the RoboMission category more than one controller may be allowed, in the RoboSports category each robot must have only one controller, in line with Rule 8.12.
The match time is randomized after the robots are ready in a waiting state (waiting for the start button to be pressed), and at the same time as the ball positions are randomized.
The method of randomization may vary and is decided by the Event Organizers. Examples include:
Rolling a standard 6-sided die: Match Time = 60 seconds + (d6 × 10 seconds)
Rolling a 12-sided die: Match Time = 60 seconds + (d12 × 5 seconds)
Using an online randomizer tool: https://rs2026.wro.events/
The selected match time is announced at the start of the match, allowing both teams and spectators to know how much time is available.
*Note: the randomizer tool is configured for mobile phones, if you open it on a computer please resize the window to portrait/phone dimensions. That will show the full RoboSports field with placements of the balls and the time of the match.
The 9th orange ball was introduced to reduce the likelihood of a draw at the end of a round and to add an additional strategic element to the game. If the 9th ball remains in its starting position until the end of the round, a draw may still occur.
During the match, if all nine orange balls are on the same side of the field, the match ends early according to rule 6.32.4.
The 9th ball starts in the center of the field and is fixed in place using a method defined by the Event Organizers (for example, using a common LEGO 2815 Technic tire).
Future Innovators
Due to this year’s theme, teams may bring up to a total of 1 liter of non-dangerous fluid materials for demonstration purposes.
This may include, but is not limited to, colored water, non-toxic paint, gels, or food-grade liquids (e.g. syrup or oil), as long as they are safe and do not pose any risk.
Teams should also bring appropriate protective coverings to avoid any spills or stains at the event location.
Future Engineers
No Q&A yet.
