What does it add?
For now, the Prism Tower, inspired by Command & Conquer: Red Alert 2. More defences are on the way, including anti-air turrets.

Why is my prism tower so weak?
On its own it is. Place several close together (within their range, 26 tiles): idle towers link up in a chain and feed their energy into one shot, multiplying its damage up to ×5.

Do laser upgrades make it stronger?
No. It deals its own prism damage: enemies resist it like laser, but only the Prism damage research improves it (6 levels plus an infinite one).

It doesn't fire / the crown stopped spinning.
Check its power: without electricity it stops.

Does it take my player colour?
Yes, the base and the crown of prisms both do.

Do I need Space Age?
No. With Space Age, the Prism Tower becomes a late-game defence (tungsten, holmium, lithium, cryogenic science) and the vanilla rocket turret can shoot flyers from New Enemies in the air.

Do I need New Enemies?
No, it works on its own against the vanilla biters. They're made to be played together, though.

Can I add it to an existing save?
Yes. Research the Prism tower as usual.

I found a bug / I have an idea.
Please post it in the Discussion tab. Thanks!