Pupils can access a leader board to show coins and stars earned in their class or school but there are no multi-player games. The emphasis in NumBots is on self-improvement and understanding the mathematical concepts. Compared to Times Tables Rock Stars, there's a lower priority given to speed of responses (though it's still important in NumBots) and the idea of racing against other children goes against that.
Since NumBots is aimed at mathematical novices, we think this is the most appropriate approach, even if the races are asked for by children and teachers.
We are planning to create a class tournament option, however, where pupils contribute to their class' score as a team effort to outscore another class.