Defense of the Citadel

Created by Spherewalker Games

Battle against waves of enemies to prevent them from breaching your defense to the heart of the Citadel. The Defense of the Citadel is a cooperative hero defense board game for 1 to 4 players. In this high fantasy world, you as the hero need to defend the heart of citadel against waves of enemy invasion.

Latest Updates from Our Project:

Development Update: Enemy Units & Combats
about 1 year ago – Wed, Mar 07, 2018 at 02:59:46 PM

Hi, everyone!

We are grateful to reach you and speak to you again!
This time let us get closer to the enemy forces and combats in Defense of the Citadel.

Enemy Units

In Defense of the Citadel, actions start with brutal enemies marching into the Citadel. Invasions are what you need to overcome. By default, all enemy units can move two squares per turn. Each can attack one hero which is within its specific range per turn. The specific ranges are indicated on the relevant enemy unit cards, which also specify the unique characteristics and abilities of the enemy types.

Enemy unit card (standard version): Skeleton Archer
Miniature: Skeleton Archer

For each type of miniature units, we will have one enemy unit card. Below is an explanation of what each section on the card means:

a) The name of the enemy type.
b) The portrait of the enemy units which corresponds to the miniatures.
c) The HP of the enemy type, indicating the amount of damage tokens it can take.
d) The attributes of the enemy type. From left to right the symbols represent: strength, agility, magic, range.
e) One of the attributes is highlighted with a red number in a black background. This is the primary attribute of the enemy type.
f) Special rules and conditions attributed to the enemy type. In the sample above, the “Undead” takes extra damages from certain skills.

Enemy unit cards are printed on both sides. One side represents the “standard version”, and the other side represents the “elite version”.

The elite versions are much stronger. As a scenario or campaign develops further, the enemy waves would build up with more elites. The enemy units (elite version) are represented by the same miniatures as the standard version – either one version will appear in a scenario or campaign. Below is the elite version of the Skeleton Archer, namely the Skeleton Sniper.

Enemy unit card (elite version): Skeleton Sniper


Player Attacks

You can attack one enemy unit at a time. You can attack enemies in three ways: through using class skills, items or performing a basic attack with your weapons. In most cases, an attack is determined by the attributes of the player and the enemy type. For example, in a basic attack, you can choose a target within range. Then, you can select one of the three attributes the attack is made with. After selecting the attribute, you must roll a D6 dice and beat the number shown on the enemy unit card (taking into account any positive or negative effects).

If you succeed, you can inflict certain damage to the enemy unit. This is indicated by placing the damage token underneath the enemy miniature. When this damage token equals the enemy unit’s HP, the enemy is defeated and returns to the side of the board. 

 An example of damage tokens

Although this rarely happens, when the difference in attributes is overwhelming and greater than six, you can skip the dice roll step, and go straight to the results.

Defending Enemy Attacks

During the enemy phase, the table turns and the players are then on the defending side! When a player is within the range, the enemy would attack him/her with its primary attribute.

Similar to attacking, the player must roll a D6 dice and beat the number shown on the enemy unit card (taking into account any positive or negative effects). If the player succeeds, he/she has deflected the attack and remains unharmed; otherwise the player takes damage and loses 1 HP.

Incapacitated and Assisting

If the HP is reduced to 0, the player is “incapacitated”, and can no longer take any action. The miniature is placed sideways on the spot, and remains there until another player character enters the same square and assists that player to get back up.

Assisting can only be done on a square with no enemy unit by using 1 EP. After the player is assisted, he/she recovers back to 1 HP and can resume the battle against the invasion.

Defense of the Citadel is a cooperative game. Players will soon realize that they are overrun by enemy forces if they try to do things alone!

We hope to share more about our progress in the next update! Thank you so much for being here with us!

Development Update: Box and Tiles
over 1 year ago – Wed, Feb 07, 2018 at 10:06:23 PM

Hi, everyone!

We are especially excited, since this is to show you the prototypes of our game box and game tiles! We feel so good about the touch and quality of these prototypes! 


The game box will carry Defense of the Citadel to your hands!






All your hero and monster miniatures will be starting real battles on these tiles! These are some of the tiles in the game.


The tiles are double-sided, with a unique game environment on each side. You can design your own combinations and specializations with these, and customize your own citadels for the battles! 

Chinese New Year is coming next week, and we will carry along our spirit to the Year of Dog! We hope to share more of the gameplay about combat and enemy units next time!

Thank you so much for staying with us on this wonderful journey! 

Wish you all a prosperous Year of Dog! 恭喜發財!

Development Update: Characters and Classes
over 1 year ago – Sun, Jan 07, 2018 at 06:54:14 PM

Hi, everyone!

Happy 2018! We couldn’t wait to come back to you with an update to the game! As mentioned, this time we would look into characters and classes.


The customization of this game starts with your selection of a character from one of the races in the world of Defense of the Citadel. As we all would place our character sheets in front of our eyes, they should look great and be easy to read. Here’s the new look of one of the character sheets:

Let’s have a look at what each section represents:

(a) The racial name.

(b) The portrait of the character, with a miniature representing the player.

(c) HP: this bar represents the health of the character. A red wooden cube is used to keep track. Different races have different maximum HP levels.

(d) EP: this bar represents the energy of the character. A green wooden cube is used to keep track. Different races have different maximum EP levels.

(e) This section represents the attribute bonuses the character receives on various actions throughout the game.

(f) & (g) The racial traits of the character are passive bonuses. This is a condition that would apply to players throughout the game.

(h) & (i) Areas for the player to place the first and second sets of class-skill cards (facing up).

(j), (k) & (l) Areas to display weapons, armors and items respectively. The player can only place one card per section.

There are five races (six if including the add-on) to choose from. Each has specific HP/EP values, attribute bonuses and racial traits.







*Exclusively for the Kickstarter version, the character sheets will be double-sided, with one side showing the male version and the other side the female version. Character statistics of both versions are identical. It’s up to players’ aesthetic preferences to select either version each time.


To turbo up the level of customization, “classes” allow players to gain access to all sorts of powerful skills for the battles in Defense of the Citadel. Each scenario in “scenario game mode” determines the number of “expertise points” each player can be having each time. Players can use these points to learn the skills from up to two classes.

Let’s have a look at what each section represents:

(a) The name of the class skill.

(b) The energy needed to use this skill.

(c) The range that this skill can be used. The first number is the minimum range and the second number is the maximum range.

(d) The attribute type of this skill. It means that the damage this skill deals with is of that type. If there are multiple attributes in display, the player can choose to use different damage types for this skill.

(e) Class skill’s special rules.

(f) The number of expertise points you need to acquire this skill.

Each class skill can only be used once per turn. When it’s used, the cards should be turned sideways to indicate that they have been used in that turn. In the next turn, the player can straighten the cards to indicate that the skill can be used again.

We hope to share more about our production in the next update!

Thank you so much for being with us! Let’s have a wonderful 2018 together!

Development Update: Gameplay
over 1 year ago – Wed, Dec 06, 2017 at 05:01:04 PM

Hi, everyone!

It has always been a great pleasure to connect with you! We’re so grateful to have heard from some of you telling us about how we are liked because of the two key aspects of the gameplay: crafting and game modes. Let's look into more details.

Crafting and Customization

One key element of Defense of the Citadel is to let players craft the game environment and customize the gameplay according to their own styles. Through keeping track of the “resource points”, which are represented by hammer icons on each tile and item, players can create their own customized game world in the Citadel according to their preferences. We hope that this part of the game will increase the enjoyment of the gameplay so that every time you play, you find yourself being new to such environment and can always find new elements throughout the gameplay.

The below are examples of hammer icons as “resource points” on tiles and item cards:

Frost Circle tile, Arcane Wand card
Frost Circle tile, Arcane Wand card

In the examples, you will have to use two resource points to create the Frost Circle tile and one resource point to create the Arcane Wand. (Note: a flask icon indicates that you need the Arcane Lab unlocked as a prerequisite to create this tile/item.)

Likewise, the Arcane Lab is a tile you can craft using resource points. There are three types of such facilities: the Arcane Lab, the Forge and Workshop. Most of the higher tier items require two or even three facility combinations which force you to be specializing on using the resource points.

Arcane Lab, Forge, Workshop
Arcane Lab, Forge, Workshop

Game Mode: Scenario

In Scenario mode, players are given a pre-set scenario with specific conditions. Each scenario has no impact on other scenarios. Together with the customized game environment created with the tiles, players can have a unique experience in the gameplay each time.

The tile setup comes with some rules as follows:

  • 1. Each square in the tiles must have a path to the heart.
  • 2. Tiles' entry/exit edges must match: you cannot have a blocked entrance on one side! 

Each scenario will define the number of resource points available for each player. It’s up to the players how they use the resource points to achieve the scenario goal.

Here is an example of a scenario:

Game Mode: Campaign

The Campaign mode let players construct their own stories in the style of “Choose Your Own Adventure” book. Starting with zero resource, players need to unfold different events out of their own decisions and performances.

Here is an extract from midway of a campaign example:

Event 4A

After the furious battle, everyone was injured heavily. (A) <The player with the highest HP remaining> took the initiative to do the patrol that night, allowing everyone else to rest (1 HP recovered to all other players).

As (A) patrolled that night, (A) heard a strange noise… it was coming from within a wall <1d6> squares away from the heart of the Citadel. (A) being certain that there was nothing on the other side.. yet you sensed killing intent and a nefarious aura. Highly alert after close inspection (A) discovered the wall was hollow on the other side and chose to:

- Breakdown the wall to discover what is on the other side, roll for <STR>. If successful, go to Scenario 5.

- Teleport into the wall (only available if (A) is a Wizard) roll for <INT>. If successful, go to Scenario 6.

- Place a holy seal on the wall (only available if (A) is a Cleric), roll for <INT>. If successful, go to Scenario 7.

If (A) fail any of the rolls or simply believe the mind was playing a trick on you, go to Scenario 11...

...keep enjoying!

We hope to share more about our Heroes and Classes in the next update!

We’re so honoured that you are here. Thank you so much!

Development Update: Miniature Prototypes
over 1 year ago – Mon, Nov 06, 2017 at 07:07:29 PM

Hi everyone!

Because of your presence, we could be here reaching you again! Thank you very much! We feel grateful to have been given the opportunity to work on something we truly enjoy. The miniature creations are what we couldn't wait to show you. Each of them has been under careful fine-tuning, and we are about to have them ready for production. The prototypes shown in the following photos are made of resin.

Knight Dragon

Mummy Wraith

Naga Witch

Rock Golem

Venom Serpent

Arcane Lich

Bat Imp

Terror Slayer

Blood Panther

Skeleton Archer

The General

Rune Bomb


Magic Chest

Divine Ward

Rolling Boulder

Totem Tower

Avian Male

Avian Female

Longyan Male

Longyan Female

Sun Elf Male

Sun Elf Female

Human Male

Human Female

Sentient Male

Sentient Female

Jyujin Male

Jyujin Female

All miniatures grouped

Thank you very much for your patience! The next update will be covering the gameplay. We feel very grateful to have you in the journey!

Pledge manager reminder: For those who haven't filled in your pledge details and those who haven't settled shipping fees, we are sending a reminder to you!