diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/settings/contributors/ContributorsActivity.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/settings/contributors/ContributorsActivity.kt
index 676a5d58..cc498495 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/settings/contributors/ContributorsActivity.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/settings/contributors/ContributorsActivity.kt
@@ -1,23 +1,24 @@
 package pl.szczodrzynski.edziennik.ui.modules.settings.contributors
 
 import android.os.Bundle
+import android.os.Process
+import android.view.KeyEvent
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
-import androidx.viewpager.widget.ViewPager
-import com.google.android.material.tabs.TabLayout
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
-import pl.szczodrzynski.edziennik.App
-import pl.szczodrzynski.edziennik.Bundle
-import pl.szczodrzynski.edziennik.R
+import pl.szczodrzynski.edziennik.*
 import pl.szczodrzynski.edziennik.data.api.szkolny.SzkolnyApi
 import pl.szczodrzynski.edziennik.data.api.szkolny.response.ContributorsResponse
 import pl.szczodrzynski.edziennik.databinding.ContributorsActivityBinding
 import pl.szczodrzynski.edziennik.ui.modules.base.lazypager.FragmentLazyPagerAdapter
 import pl.szczodrzynski.edziennik.ui.modules.error.ErrorSnackbar
 import kotlin.coroutines.CoroutineContext
+import kotlin.system.exitProcess
 
 class ContributorsActivity : AppCompatActivity(), CoroutineScope {
     companion object {
@@ -35,6 +36,28 @@ class ContributorsActivity : AppCompatActivity(), CoroutineScope {
     // local/private variables go here
     private val errorSnackbar: ErrorSnackbar by lazy { ErrorSnackbar(this) }
 
+    private var konami = 0
+
+    override fun onKeyUp(keyCode: Int, event: KeyEvent): Boolean {
+        when (keyCode) {
+            KeyEvent.KEYCODE_DPAD_UP -> konami in 0..1
+            KeyEvent.KEYCODE_DPAD_DOWN -> konami in 2..3
+            KeyEvent.KEYCODE_DPAD_LEFT -> konami in 4..6 step 2
+            KeyEvent.KEYCODE_DPAD_RIGHT -> konami in 5..7 step 2
+            KeyEvent.KEYCODE_B -> konami == 8
+            KeyEvent.KEYCODE_A -> konami == 9
+            else -> false
+        }.let {
+            if (!it) {
+                konami = 0
+                return super.onKeyUp(keyCode, event)
+            }
+            konami++
+            b.konami.isVisible = konami == 10
+            return true
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         app = application as App
@@ -45,6 +68,40 @@ class ContributorsActivity : AppCompatActivity(), CoroutineScope {
         b.tabLayout.isVisible = false
         b.viewPager.isVisible = false
 
+        b.szkolny.onLongClick {
+            if (b.konami.isVisible) {
+                b.glove.isVisible = true
+                b.szkolny.isInvisible = true
+            }
+            true
+        }
+
+        b.glove.onClick {
+            MaterialAlertDialogBuilder(this)
+                .setTitle(R.string.are_you_sure)
+                .setMessage(R.string.dev_mode_enable_warning)
+                .setPositiveButton(R.string.yes) { _, _ ->
+                    app.config.devMode = true
+                    App.devMode = true
+                    MaterialAlertDialogBuilder(this)
+                        .setTitle("Restart")
+                        .setMessage("Wymagany restart aplikacji")
+                        .setPositiveButton(R.string.ok) { _, _ ->
+                            Process.killProcess(Process.myPid())
+                            Runtime.getRuntime().exit(0)
+                            exitProcess(0)
+                        }
+                        .setCancelable(false)
+                        .show()
+                }
+                .setNegativeButton(R.string.no) { _, _ ->
+                    app.config.devMode = false
+                    App.devMode = false
+                    this.finish()
+                }
+                .show()
+        }
+
         launch {
             contributors = contributors ?: SzkolnyApi(app).runCatching(errorSnackbar) {
                 getContributors()
diff --git a/app/src/main/res/drawable/thanos_idle.png b/app/src/main/res/drawable/thanos_idle.png
new file mode 100644
index 00000000..b94feb35
Binary files /dev/null and b/app/src/main/res/drawable/thanos_idle.png differ
diff --git a/app/src/main/res/layout/contributors_activity.xml b/app/src/main/res/layout/contributors_activity.xml
index b05e9c37..a9d8a452 100644
--- a/app/src/main/res/layout/contributors_activity.xml
+++ b/app/src/main/res/layout/contributors_activity.xml
@@ -20,6 +20,14 @@
             android:layout_height="match_parent"
             android:fitsSystemWindows="true">
 
+            <ImageView
+                android:id="@+id/konami"
+                android:layout_width="90dp"
+                android:layout_height="90dp"
+                android:layout_gravity="bottom|end"
+                android:visibility="gone"
+                app:srcCompat="@drawable/emoji_glasses" />
+
             <com.google.android.material.appbar.AppBarLayout
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -39,15 +47,31 @@
                         app:layout_collapseMode="parallax"
                         app:layout_collapseParallaxMultiplier="0.7">
 
-                        <ImageView
+                        <FrameLayout
                             android:layout_width="wrap_content"
                             android:layout_height="wrap_content"
-                            android:layout_gravity="center_horizontal"
-                            android:layout_marginTop="16dp"
-                            android:scaleType="center"
-                            android:scaleX="0.8"
-                            android:scaleY="0.8"
-                            android:src="@mipmap/ic_splash" />
+                            android:layout_gravity="center"
+                            android:layout_marginTop="16dp">
+
+                            <ImageView
+                                android:id="@+id/szkolny"
+                                android:layout_width="wrap_content"
+                                android:layout_height="wrap_content"
+                                android:layout_gravity="center"
+                                android:scaleType="center"
+                                android:scaleX="0.8"
+                                android:scaleY="0.8"
+                                android:src="@mipmap/ic_splash" />
+
+                            <ImageView
+                                android:id="@+id/glove"
+                                android:layout_width="144dp"
+                                android:layout_height="144dp"
+                                android:layout_gravity="center"
+                                android:paddingBottom="4dp"
+                                android:visibility="gone"
+                                app:srcCompat="@drawable/thanos_idle" />
+                        </FrameLayout>
 
                         <TextView
                             android:layout_width="match_parent"