diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/GameHandler.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/GameHandler.kt
index fc4e8cda..42843863 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/GameHandler.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/GameHandler.kt
@@ -8,6 +8,7 @@ import xyz.poeschl.roborush.controller.WebsocketController
 import xyz.poeschl.roborush.exceptions.PositionNotAllowedException
 import xyz.poeschl.roborush.exceptions.PositionOutOfMapException
 import xyz.poeschl.roborush.gamelogic.actions.RobotAction
+import xyz.poeschl.roborush.gamelogic.actions.ScanAction
 import xyz.poeschl.roborush.gamelogic.internal.MapHandler
 import xyz.poeschl.roborush.gamelogic.internal.RobotHandler
 import xyz.poeschl.roborush.models.ActiveRobot
@@ -138,7 +139,7 @@ class GameHandler(
       activeRobot?.let { registeredRobot ->
         val knownTiles = getTilesForMovementOnPosition(startPosition)
         registeredRobot.knownPositions.addAll(knownTiles.map(Tile::position))
-        registeredRobot.lastResult = knownTiles
+        registeredRobot.lastResult = ScanAction.ScanResult(knownTiles)
         websocketController.sendRobotUpdate(registeredRobot)
         websocketController.sendUserRobotData(registeredRobot)
         websocketController.sendKnownPositionsUpdate(registeredRobot)
diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelAction.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelAction.kt
index 4e68acf4..014ff659 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelAction.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelAction.kt
@@ -5,10 +5,11 @@ import org.slf4j.LoggerFactory
 import xyz.poeschl.roborush.exceptions.TankFullException
 import xyz.poeschl.roborush.exceptions.WrongTileTypeException
 import xyz.poeschl.roborush.gamelogic.GameHandler
+import xyz.poeschl.roborush.gamelogic.actions.RefuelAction.RefuelActionResult
 import xyz.poeschl.roborush.models.ActiveRobot
 import xyz.poeschl.roborush.models.TileType
 
-class RefuelAction @JsonCreator constructor() : RobotAction<Int> {
+class RefuelAction @JsonCreator constructor() : RobotAction<RefuelActionResult> {
 
   companion object {
     val LOGGER = LoggerFactory.getLogger(RefuelAction::class.java)
@@ -25,10 +26,10 @@ class RefuelAction @JsonCreator constructor() : RobotAction<Int> {
     }
   }
 
-  override fun action(robot: ActiveRobot, gameHandler: GameHandler): RobotActionResult<Int> {
+  override fun action(robot: ActiveRobot, gameHandler: GameHandler): RobotActionResult<RefuelActionResult> {
     robot.addFuel(gameHandler.getRobotMaxFuel())
     LOGGER.debug("Refuel robot {} to {}", robot.id, robot.fuel)
-    return RobotActionResult(robot, robot.fuel)
+    return RobotActionResult(robot, RefuelActionResult(robot.fuel))
   }
 
   override fun toString(): String {
@@ -44,4 +45,6 @@ class RefuelAction @JsonCreator constructor() : RobotAction<Int> {
   override fun hashCode(): Int {
     return javaClass.hashCode()
   }
+
+  data class RefuelActionResult(val robotFuel: Int) : Result
 }
diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RobotAction.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RobotAction.kt
index 071c9484..f9a2fa5c 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RobotAction.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/RobotAction.kt
@@ -22,7 +22,7 @@ import xyz.poeschl.roborush.models.ActiveRobot
   Type(value = SolarChargeAction::class, name = "solarCharge"),
   Type(value = FullMapScanAction::class, name = "fullScan")
 )
-interface RobotAction<T> {
+interface RobotAction<T : Result> {
 
   /***
    * This method will check if the current action is allowed to execute.
@@ -41,3 +41,5 @@ interface RobotAction<T> {
 }
 
 data class RobotActionResult<T>(val updatedRobot: ActiveRobot, val result: T)
+
+interface Result
diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/ScanAction.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/ScanAction.kt
index 627ff72e..4c840934 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/ScanAction.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/ScanAction.kt
@@ -47,5 +47,5 @@ class ScanAction @JsonCreator constructor(val distance: Int) : RobotAction<ScanA
     return distance
   }
 
-  data class ScanResult(val tiles: List<Tile>)
+  data class ScanResult(val tiles: List<Tile>) : Result
 }
diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeAction.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeAction.kt
index 802272fd..4313b9d1 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeAction.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeAction.kt
@@ -5,10 +5,11 @@ import org.slf4j.LoggerFactory
 import xyz.poeschl.roborush.exceptions.ActionDeniedByConfig
 import xyz.poeschl.roborush.exceptions.TankFullException
 import xyz.poeschl.roborush.gamelogic.GameHandler
+import xyz.poeschl.roborush.gamelogic.actions.RefuelAction.RefuelActionResult
 import xyz.poeschl.roborush.models.ActiveRobot
 import kotlin.math.ceil
 
-class SolarChargeAction @JsonCreator constructor() : RobotAction<Int> {
+class SolarChargeAction @JsonCreator constructor() : RobotAction<RefuelActionResult> {
 
   companion object {
     val LOGGER = LoggerFactory.getLogger(SolarChargeAction::class.java)
@@ -24,12 +25,12 @@ class SolarChargeAction @JsonCreator constructor() : RobotAction<Int> {
     }
   }
 
-  override fun action(robot: ActiveRobot, gameHandler: GameHandler): RobotActionResult<Int> {
+  override fun action(robot: ActiveRobot, gameHandler: GameHandler): RobotActionResult<RefuelActionResult> {
     val addedFuel = ceil(gameHandler.getRobotMaxFuel() * gameHandler.getSolarChargeRate()).toInt()
     robot.addFuel(addedFuel)
     LOGGER.debug("Solar charge robot {} to {}", robot.id, robot.fuel)
 
-    return RobotActionResult(robot, robot.fuel)
+    return RobotActionResult(robot, RefuelActionResult(robot.fuel))
   }
 
   override fun toString(): String {
diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitAction.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitAction.kt
index a84b92d9..ee16da44 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitAction.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitAction.kt
@@ -3,9 +3,10 @@ package xyz.poeschl.roborush.gamelogic.actions
 import com.fasterxml.jackson.annotation.JsonCreator
 import org.slf4j.LoggerFactory
 import xyz.poeschl.roborush.gamelogic.GameHandler
+import xyz.poeschl.roborush.gamelogic.actions.WaitAction.*
 import xyz.poeschl.roborush.models.ActiveRobot
 
-class WaitAction @JsonCreator constructor() : RobotAction<Int> {
+class WaitAction @JsonCreator constructor() : RobotAction<EmptyResult> {
 
   companion object {
     private val LOGGER = LoggerFactory.getLogger(WaitAction::class.java)
@@ -15,9 +16,9 @@ class WaitAction @JsonCreator constructor() : RobotAction<Int> {
     // Waiting is always successful
   }
 
-  override fun action(robot: ActiveRobot, gameHandler: GameHandler): RobotActionResult<Int> {
+  override fun action(robot: ActiveRobot, gameHandler: GameHandler): RobotActionResult<EmptyResult> {
     // Doing nothing
-    return RobotActionResult(robot, 0)
+    return RobotActionResult(robot, EmptyResult())
   }
 
   override fun equals(other: Any?): Boolean {
@@ -33,4 +34,6 @@ class WaitAction @JsonCreator constructor() : RobotAction<Int> {
   override fun toString(): String {
     return "Wait()"
   }
+
+  data class EmptyResult(val state: String = "(╯°□°)╯︵ ┻━┻") : Result
 }
diff --git a/backend/src/main/kotlin/xyz/poeschl/roborush/models/Robot.kt b/backend/src/main/kotlin/xyz/poeschl/roborush/models/Robot.kt
index 68c50b1b..a28c2b12 100644
--- a/backend/src/main/kotlin/xyz/poeschl/roborush/models/Robot.kt
+++ b/backend/src/main/kotlin/xyz/poeschl/roborush/models/Robot.kt
@@ -25,7 +25,7 @@ data class ActiveRobot(
       Int::class, ScanAction.ScanResult::class
     ]
   )
-  var lastResult: Any? = null,
+  var lastResult: Result? = null,
   @JsonIgnore
   val knownPositions: MutableSet<Position> = mutableSetOf()
 ) {
diff --git a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/GameHandlerTest.kt b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/GameHandlerTest.kt
index 352384af..1a55d618 100644
--- a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/GameHandlerTest.kt
+++ b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/GameHandlerTest.kt
@@ -10,6 +10,7 @@ import xyz.poeschl.roborush.controller.WebsocketController
 import xyz.poeschl.roborush.exceptions.PositionNotAllowedException
 import xyz.poeschl.roborush.exceptions.PositionOutOfMapException
 import xyz.poeschl.roborush.gamelogic.actions.MoveAction
+import xyz.poeschl.roborush.gamelogic.actions.ScanAction
 import xyz.poeschl.roborush.gamelogic.internal.MapHandler
 import xyz.poeschl.roborush.gamelogic.internal.RobotHandler
 import xyz.poeschl.roborush.models.Position
@@ -276,7 +277,7 @@ class GameHandlerTest {
 
     // VERIFY
     assertThat(registeredRobot.knownPositions).containsAll(neighborTiles.map(Tile::position))
-    assertThat(registeredRobot.lastResult as List<*>).containsAll(neighborTiles)
+    assertThat((registeredRobot.lastResult as ScanAction.ScanResult).tiles).containsAll(neighborTiles)
     verify { robotHandler.registerRobotForGame(1, startPosition) }
     verify { websocketController.sendRobotUpdate(registeredRobot) }
     verify { websocketController.sendKnownPositionsUpdate(registeredRobot) }
diff --git a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelActionTest.kt b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelActionTest.kt
index fbce6e4d..140731bb 100644
--- a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelActionTest.kt
+++ b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/RefuelActionTest.kt
@@ -82,6 +82,6 @@ class RefuelActionTest {
 
     // VERIFY
     assertThat(actionResult.updatedRobot.fuel).isEqualTo(maxRobotFuel)
-    assertThat(actionResult.result).isEqualTo(maxRobotFuel)
+    assertThat(actionResult.result).isEqualTo(RefuelAction.RefuelActionResult(300))
   }
 }
diff --git a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeActionTest.kt b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeActionTest.kt
index 38a78d0f..876571e5 100644
--- a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeActionTest.kt
+++ b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/SolarChargeActionTest.kt
@@ -8,6 +8,7 @@ import org.junit.jupiter.api.assertThrows
 import xyz.poeschl.roborush.exceptions.ActionDeniedByConfig
 import xyz.poeschl.roborush.exceptions.TankFullException
 import xyz.poeschl.roborush.gamelogic.GameHandler
+import xyz.poeschl.roborush.gamelogic.actions.RefuelAction.RefuelActionResult
 import xyz.poeschl.roborush.test.utils.builder.Builders.Companion.a
 import xyz.poeschl.roborush.test.utils.builder.GameLogicBuilder.Companion.`$ActiveRobot`
 
@@ -82,7 +83,7 @@ class SolarChargeActionTest {
     // VERIFY
     val expectedFuel = (10 + chargeRate * maxRobotFuel).toInt()
     assertThat(actionResult.updatedRobot.fuel).isEqualTo(expectedFuel)
-    assertThat(actionResult.result).isEqualTo(expectedFuel)
+    assertThat(actionResult.result).isEqualTo(RefuelActionResult(60))
   }
 
   @Test
@@ -103,6 +104,6 @@ class SolarChargeActionTest {
 
     // VERIFY
     assertThat(actionResult.updatedRobot.fuel).isEqualTo(maxRobotFuel)
-    assertThat(actionResult.result).isEqualTo(maxRobotFuel)
+    assertThat(actionResult.result).isEqualTo(RefuelActionResult(100))
   }
 }
diff --git a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitActionTest.kt b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitActionTest.kt
index 266ba756..f8776802 100644
--- a/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitActionTest.kt
+++ b/backend/src/test/kotlin/xyz/poeschl/roborush/gamelogic/actions/WaitActionTest.kt
@@ -5,6 +5,7 @@ import io.mockk.mockk
 import org.assertj.core.api.Assertions.assertThat
 import org.junit.jupiter.api.Test
 import xyz.poeschl.roborush.gamelogic.GameHandler
+import xyz.poeschl.roborush.gamelogic.actions.WaitAction.EmptyResult
 import xyz.poeschl.roborush.test.utils.builder.Builders.Companion.a
 import xyz.poeschl.roborush.test.utils.builder.GameLogicBuilder.Companion.`$ActiveRobot`
 
@@ -23,6 +24,6 @@ class WaitActionTest {
     val actionResult = waitAction.action(robot, gameHandler)
 
     // VERIFY
-    assertThat(actionResult.result).isEqualTo(0)
+    assertThat(actionResult.result).isEqualTo(EmptyResult())
   }
 }