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Paper Protocol

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About Paper Protocol

Paper Protocol is a tower defense game in which you defend the Paper Co. building from angry trees. You control and upgrade a mech alongside a squad of high-tech turrets, choosing upgrades to shape how you fight.

Cores and upgrades

You and each turret can use one of three main cores, each built around a different approach:

  • Hellraiser: deal more damage through brute force.
  • Saboteur: slow, stun and otherwise hinder the trees, giving the turrets a better chance to take them out.
  • Overdriver: help your other turrets deal more damage and stay at the top of their game.

Enemies and challenges

Each enemy tree has unique stats, and some have abilities that can become dangerous if left unchecked. These include increased movement speed and an explosion on death that stuns nearby turrets.

You can advance through different difficulties, modifiers and maps as you work to defeat the trees.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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