diff --git a/docs/building/EclipseGuide.md b/docs/building/EclipseGuide.md
index 5d20427..0d3305d 100644
--- a/docs/building/EclipseGuide.md
+++ b/docs/building/EclipseGuide.md
@@ -1,4 +1,4 @@
-### Eclipse Guide
+# Eclipse Guide
 
 This document is a guide to configuring Eclipse IDE for developing Progressia.
 
@@ -94,7 +94,7 @@ into 'Main Class' field.
 5. In the 'Arguments' tab, put
 `${workspace_loc:Progressia}/run`
 into 'Working directory:' > 'Other' field. Replace `Progressia` with your name of the project.
-Alternatively specify another location outside of the project's root directory.
+Alternatively, specify another location outside of the project's root directory.
 6. Click 'Apply' to save changes. Exit Run Configurations.
 
 Step 5 is required to specify that the game must run in some directory other than the project root,
diff --git a/docs/building/IntelliJIDEAGuide.md b/docs/building/IntelliJIDEAGuide.md
new file mode 100644
index 0000000..7ce7c4c
--- /dev/null
+++ b/docs/building/IntelliJIDEAGuide.md
@@ -0,0 +1,44 @@
+# Intellij IDEA Guide
+
+This document is a guide to configuring Intellij IDEA for developing Progressia.
+
+## Setup
+
+### Downloading project
+
+Although the project may be downloaded manually or using git directly (as described in the
+[Build Guide](BuildGuide.md)), it may be more convenient to use pre-installed Intellij IDEA Git extension. If you choose not to, skip the following subsection.
+
+#### Using Git Extension
+
+[Git extension](https://plugins.jetbrains.com/plugin/13173-git) is a git interface for Intellij IDEA. It is currently shipped with Intellij IDEA.
+
+1. Open Intellij IDEA welcome screen, click the 'Get from VCS' button. Alternatively, use 'File' menu > 'New' > 'Project From Version Control...'.
+2. Insert `https://github.com/OLEGSHA/Progressia.git` in the 'URL' field.
+3. Change the local repository path, if necessary, and click 'Clone'.
+
+### Creating a Run Configuration
+
+Run configurations are used by Intellij IDEA to specify how a project must be run.
+
+#### Using GUI shortcut
+
+1. In Project Explorer, open `ru.windcorp.progressia.client.ProgressiaClientMain`.
+2. Press small green triangle button in code editor window.
+3. In the drop-down menu, click 'Modify Run Configuration...'.
+4. Append `\run` to the 'Working directory' field. Alternatively, specify another location outside of the project's root directory.
+5. Click 'Apply' to save changes.
+
+#### Using 'Add Configuration' menu
+
+1. Click 'Add Configuration...'.
+2. In 'Run/Debug Configurations', click 'Add new configuration' with the plus icon.
+3. In the drop-down list, select 'Application'.
+4. Enter the configuration name .
+5. Select a JRE from the drop-down list.
+6. Select the module whose classpath should be used to run the application: `Progressia.main`.
+7. Enter `ru.windcorp.progressia.client.ProgressiaClientMain` in the 'Main Class' field.
+8. Append `\run` to the 'Working directory' field. Alternatively, specify another location outside of the project's root directory.
+9. Click 'Apply' to save changes.
+
+Step 8 is required to specify that the game must run in some directory other than the project root, which is the default in Intellij IDEA.
\ No newline at end of file