Tower defense: 20 x 3D maps with your selection of inferno, laser, cannon, temporal, concussion, missile towers, etc. Defending against approaching hostile aliens. Addictive and great value. 8/10 ratings across critics and audience alike.
Many hours of gameplay. This classic is nearly 10 years old, but top rated and highly recommended.
Also checkout the original Defense Grid (Xbox 360):
https://www.xbox.com/en-AU/games/store/defense-grid/BRGZNMD4…
Best TD game ever. Nothing comes close. Path management at its best. Would love a sequel one day!