  This paper presents the design, implementation, and evaluation of a novel
collaborative educational game titled "Land of Hands", involving children and a
customized social robot that we designed (HakshE). Through this gaming
platform, we aim to teach proper hand hygiene practises to children and explore
the extent of interactions that take place between a pro-social robot and
children in such a setting. We blended gamification with Computers as Social
Actors (CASA) paradigm to model the robot as a social actor or a fellow player
in the game. The game was developed using Godot's 2D engine and Alice 3. In
this study, 32 participants played the game online through a video
teleconferencing platform Zoom. To understand the influence a pro-social
robot's nudges has on children's interactions, we split our study into two
conditions: With-Nudges and Without-Nudges. Detailed analysis of rubrics and
video analyses of children's interactions show that our platform helped
children learn good hand hygiene practises. We also found that using a
pro-social robot creates enjoyable interactions and greater social engagement
between the children and the robot although learning itself wasn't influenced
by the pro-sociality of the robot.
