Defense Grid is a tower defense game where you stop bug-like aliens from grabbing Power Cores and hauling them off the map. You build towers on fixed platforms scattered across each level—ten tower types total, each upgradeable, from basic guns to area-effect weapons. The aliens come in fifteen varieties with different tricks: some cloak, some sprint, some tank damage with armor or shields. If an enemy grabs a Core and reaches the exit, you lose it, so tower positioning matters more than spamming firepower. Later waves throw multiple enemy types at you simultaneously, forcing you to adapt your grid on the fly. It's about reading enemy routes and spending resources where they'll do the most work. Fans of spatial puzzles and resource juggling will find plenty to chew on across the campaign's varied maps.
