students need continuous programming practice in order to be able to correctly implement the concepts taught in programming clases. As a result, instructors will heve high workload of marking and grading student's program. automatic correction and evalution tools will be benecial to reduce such workload. this article describes a web based multiplayer game named that can be used to facilitate student's programming-practice problem. also has the ability to inform the students how good his solution is in terms of optimality and structure. lastly, students will find this game interesting and will feel encouraged to utilize it as an independent practice tool