I have been using Maths Blaster in my class for years. There is now a free
online version of this! The message to Math Blaster’s is clear: “Your
success depends on your ability to use your brain and logic skills.”
With a space/alien theme, Math Blaster’s lets your students become
intergalactic heros based on their math operation and critical thinking skills.
Registration is required, but the game itself is free. Be sure to check out the
Teacher Section to find Math Blaster for the Classroom.