Fortress Merge Tier Lists
Rankings for buildings and units on a tight grid — not a popularity contest.
A Fortress Merge tier list is a tile ranking. You only have so many squares. The building list answers which structure deserves a premium spot. The units list answers which army you should even try to spawn. Neither list is a moral judgment on cute graveyards. If a card does not stall, shoot, or pay, it is a sell.
Read these ranks after getting started and placement. A S-tier Tesla in the back row is a B-tier Tesla. Rank assumes you put the piece where it belongs.
How we rank
- S: Take it almost every time the shop offers it (wall, protected mine, Tesla once stall exists).
- A: Strong when your board already has the missing role.
- B: Fine as a filler, wrong as your only plan.
- C: Situational or one-copy (banner, supply crate).
- Skip: Third copies of unique auras, mines on the lane, camps you will not gear with skills.
Boss waves shuffle the list: mines drop, extra walls climb. See how to beat bosses for that conversion. When to merge decides whether two B-tier camps beat one A-tier merge.
Buildings vs units vs heroes
Buildings are the shops you drag. Units are what barracks, ranches, archer camps, and mage towers spit out. Heroes are a separate roster under players. Do not mix a hero tier into a turret tier. A hero does not replace a wall.
Mobile added extra structures (Thunder Totem, Token Bank, Training Camp) after launch. Steam’s September 2026 build advertises the core set: knights, horsemen, archers, mages, turrets, barricades, mines. If your shop shows a new name, treat it as a C until it proves a role — stall, damage, or gold — then promote it.
How to use a rank in a live fight
If the shop offers S and C, take S. If it offers two A’s and you already have both roles, reroll only when you still have space — gold. If it offers only C’s on a full board, Fight anyway. A bad roll is cheaper than a panic gem.
When two S cards fight for one tile, keep the one you cannot fake. You can fake a bit of damage with extra camps. You cannot fake a missing wall on a boss slam.
Related pages
- Buildings tier list
- Units tier list
- Heroes
- Placement
- Challenge modes if you need a stricter ranking for Grand Battle.
Frequently Asked Questions
Quick answers to the most common questions.
Is this list for mobile or Steam?
Core ranks match. Extra mobile buildings start at C until they prove a role on your board.
Why are mines S if I should sell them on bosses?
They are S on trash waves when protected. They drop to Skip on a slam they will not survive.
Do I need a copy of every S building?
No. You need the roles: stall, damage, a little economy. Extra S cards still compete for tiles.