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Build Your First Game In Core


Jump in and build a game using Core's Deathmatch framework. Customize as much or as little as you want to build this multiplayer arena shooter.

  • Completion Time: 10 minutes.
  • Previous Knowledge: Installing Core.
  • Skills you will learn:
    • Core Frameworks
    • Core Content
    • Manipulating Objects
    • Applying Materials
    • Collision
    • Player Settings
    • Game Settings
    • Spawn Points

Start a New Project

To get started, use the Create menu to make a new project

Open the NEW PROJECT Menu

Create New

  1. With Core open, click the CREATE tab in the top menu bar.
  2. Click the NEW PROJECT tab at the top of the CREATE menu.

Select the Deathmatch Framework


  1. In the GAMEPLAY FRAMEWORKS section, select Deathmatch.
  2. In the right side panel, name your project. MyFirstGame works well, but choose any name.
  3. Click CREATE.


The name you chose for the project at this stage does not have to match the final name of the published game.

Explore the Project

The Deathmatch framework gives you a complete game arena and shooter functionality out of the box.


Test Player Movement

  • Press Play or = to preview your project as a player.
  • Press Tab to pause the preview.
  • Press Stop or = to stop the preview.

As in any Core game project, you already have a working character controller.

  • Move the character with the W, A, S, and D keys.
  • Jump with Space.
  • Crouch with C.
  • Ride a mount with G.

Test Shooter Mechanics

Besides player movement, Deathmatch also gives each player a gun to shoot, and the ability to open and close doors.

  • Shoot the default gun with the left mouse button.
  • Open and close a door with F.


Test Multiplayer Gameplay

Core projects also include multiplayer networking by default. Because this is a crucial component of this game, it is important to test using Multiplayer Preview Mode as much as possible. TwoPlayers

  1. Click Multiplayer Preview Mode to switch the Preview Mode to Multiplayer.

  2. Press Play to start the preview. This will open a separate game window for each player.



You can use Alt+Enter to toggle between fullscreen and windowed mode. You can also use ++Win+Arrow++ to dock the screens side by side.

Customize the Arena

Explore Core Content

Core gives you a massive library of 3D assets, materials, sounds, and components for making games, which can be found in the Core Content Window.


You can reopen the Core Content window by going to Window > Core Content in the top menu bar.

  1. Click Core Content.
  2. Drop down the 3D Objects menu to see the props and objects that can be added to the scene.
  3. Click on the Nature subcategory.
  4. Choose a bush and some other props to drag into the scene.

Create Hiding Places

You can move, turn, and resize objects.

  • Transform Position or W activates Translation Mode.
  • Rotate Tool or E activates Rotation Mode.
  • Snap Position or R activates Scale Mode.
  1. Click on the bush and press G to move it.
  2. Use the arrows to move it into a good hiding place for a player.
  3. Press R to change the size of the bush.
  4. Click and drag the white box at the center of the bush to resize it proportionately.
  5. Move, rotate, and scale the rest of the objects to enhance the scene.

Turn Off Collision

By default, Core objects have collision, so players can't just walk into bushes yet.

  1. Test this by pressing Play to preview the game.
  2. Look at your props from a player's perspective. You should be able to walk up to a bush but collide with it once you touch it.
  3. Click on the bush to select it, and open the Properties window.
  4. Find the Collision property and change it to Force Off.

You should now be able to walk into a bush. Test this in Multiplayer Preview Mode to see how well it works for concealment.


You can reopen the Properties window by going to Window > Properties in the top menu bar.

Finishing the Arena

Add a Material to an Object

Materials allow you to add colors and textures to the objects in the scene, by dragging and dropping them onto objects.

  1. In the Core Content window, drop down the Materials menu to see the options.
  2. Pick a material, and drag it onto one of the objects in the scene.

Cover the Walls

You can apply a material to multiple objects by selecting them.

  • Use Shift+Left Button to select more objects.
  • Left click and drag to select objects in an area.
  1. In the Hierarchy window, type "wall" into the search bar to show only the objects named Whiteboard Wall 01.
  2. Press Enter to select everything from the search.
  3. Choose a material, and drag it onto one of the walls.


You can also select the entire list by clicking the first object in the list, then holding Shift and scrolling down to click the last.

Give Everything a Material

You can continue using these techniques to complete the appearance of your Deathmatch arena. Try searching for each of these labels to apply materials in groups:

  • stairs
  • window insert
  • floor



You can customize materials and how they apply to objects. Learn more in the Custom Material Tutorial.

Customizing Gameplay

In this final section, you will find different ways to change the gameplay itself.

Add Double Jumping


  1. Find Player Settings by searching for it in the Hierarchy.
  2. Open the Properties window to see all the settings that can be changed for each player
  3. In the Jump section, change Jump Max Count to 2,
  4. Press Play to test out double-jumping with Space.


Change The Round Kill Limit

In the top left corner of the screen in game, you can see that you win the Deathmatch by killing 10 opponents. This can be changed in Game Settings.


  1. Search for Round Kill Limit in the Hierarchy.
  2. Open the Properties window.
  3. Find the KillLimit property and change it to 2.
  4. Start a Multiplayer Preview of your game, and see if you win by shooting an opponent twice.


Change the UI Instructions

Although the game now ends after two kills, the instructions are shown on the screen still tell players to shoot for ten.

  1. Search for UI Text Box under Game Instructions in the Hierarchy.
  2. Open the Properties window.
  3. Change the Text property to match your game's win condition.


Move the Player Start

Let's move the "Player Start" where players spawn to be further apart. Press V to toggle gizmo visibility -- you can now see the camera, spawn points, and trigger boxes.

  1. Search for Spawn Point in the Hierarchy.
  2. Move the spawn points around the map the same way you would any object.



Press 0 to create a spawn point at your cursor's location. There are more Editor Shortcuts that can streamline your game creation flow.

Publishing a Game

You now have a complete and unique deathmatch-style game. If you are ready to test it with real human players, then publish your game.

Next Steps

Publish a Game | Terrain Tutorial | Basic Weapon Tutorial | Abilities Tutorial

Last update: August 22, 2022