Do 7 tasks to build the NASA planned moonbase and be awarded a certificate as a Space Pioneer. Assemble a solar power tower, build a greenhouse, discover ice, build an ice to oxygen gas plant, build a launch pad, build a road, and build a Lunar cave habitat. Flags locate Tasks. Drive rover paver.
Draw your towers. Defend your doodled castle. Try not to panic. A playful tower defense with 20 campaign pages, drawings that affect your defenses, and online 1v1 Doodle Duels where you sketch an army and send it at a friend.