diff --git a/OpenRA.Mods.RA/Lint/CheckMapRules.cs b/OpenRA.Mods.RA/Lint/CheckMapRules.cs
new file mode 100644
index 0000000000..895a2d4eaa
--- /dev/null
+++ b/OpenRA.Mods.RA/Lint/CheckMapRules.cs
@@ -0,0 +1,31 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	public class CheckMapRules : ILintPass
+	{
+		public void Run(Action<string> emitError, Action<string> emitWarning, Map map)
+		{
+			try
+			{
+				Game.modData.RulesetCache.LoadMapRules(map);
+			}
+			catch (Exception e)
+			{
+				emitError(e.Message);
+			}
+		}
+	}
+}
+
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index f645279052..87c417404c 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -494,6 +494,7 @@
     <Compile Include="UtilityCommands\ActorStatsExport.cs" />
     <Compile Include="UtilityCommands\ExportCharacterSeparatedRules.cs" />
     <Compile Include="UtilityCommands\Extensions.cs" />
+    <Compile Include="Lint\CheckMapRules.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRA.Game\OpenRA.Game.csproj">
diff --git a/mods/cnc/maps/the-hot-box/map.yaml b/mods/cnc/maps/the-hot-box/map.yaml
index 8cf19a448e..b70f9969da 100644
--- a/mods/cnc/maps/the-hot-box/map.yaml
+++ b/mods/cnc/maps/the-hot-box/map.yaml
@@ -203,35 +203,26 @@ Rules:
 		CrateSpawner:
 			Maximum: 4
 			SpawnInterval: 5
+			CrateActors: unitcrate
 		-SpawnMPUnits:
 		-MPStartLocations:
-	CRATE:
-		-HealUnitsCrateAction:
-		-LevelUpCrateAction:
-		-GiveMcvCrateAction:
-		-RevealMapCrateAction:
-		-HideMapCrateAction:
-		-GrantUpgradeCrateAction@cloak:
-		-ExplodeCrateAction@nuke:
-		-ExplodeCrateAction@boom:
-		-ExplodeCrateAction@fire:
-		-SupportPowerCrateAction@parabombs:
-		-GiveCashCrateAction:
+	UNITCRATE:
+		Inherits: ^Crate
 		GiveUnitCrateAction@stnk:
 			SelectionShares: 4
-			Unit: stnk
+			Units: stnk
 		GiveUnitCrateAction@bike:
 			SelectionShares: 6
-			Unit: bike
+			Units: bike
 		GiveUnitCrateAction@htnk:
 			SelectionShares: 1
-			Unit: htnk
+			Units: htnk
 		GiveUnitCrateAction@e5:
 			SelectionShares: 1
-			Unit: e5
+			Units: e5
 		GiveUnitCrateAction@e1:
 			SelectionShares: 1
-			Unit: e1
+			Units: e1
 	APC:
 		Health:
 			HP: 1000
diff --git a/mods/ra/maps/drop-zone-battle-of-tikiaki/map.yaml b/mods/ra/maps/drop-zone-battle-of-tikiaki/map.yaml
index 32e7a54354..3a8962498a 100644
--- a/mods/ra/maps/drop-zone-battle-of-tikiaki/map.yaml
+++ b/mods/ra/maps/drop-zone-battle-of-tikiaki/map.yaml
@@ -294,21 +294,11 @@ Rules:
 		CrateSpawner:
 			Maximum: 3
 			SpawnInterval: 5
+			CrateActors: unitcrate
 		-SpawnMPUnits:
 		-MPStartLocations:
-	CRATE:
-		-LevelUpCrateAction:
-		-GiveMcvCrateAction:
-		-RevealMapCrateAction:
-		-HideMapCrateAction:
-		-ExplodeCrateAction@nuke:
-		-ExplodeCrateAction@boom:
-		-ExplodeCrateAction@fire:
-		-SupportPowerCrateAction@parabombs:
-		-GiveCashCrateAction:
-		-DuplicateUnitCrateAction:
-		-GiveUnitCrateAction@squadlight:
-		-GiveUnitCrateAction@squadheavysoviet:
+	UNITCRATE:
+		Inherits: ^Crate
 		GiveUnitCrateAction@ttnk:
 			SelectionShares: 4
 			Units: ttnk
diff --git a/mods/ra/maps/drop-zone-w/map.yaml b/mods/ra/maps/drop-zone-w/map.yaml
index 4cbefad4e4..e10654db65 100644
--- a/mods/ra/maps/drop-zone-w/map.yaml
+++ b/mods/ra/maps/drop-zone-w/map.yaml
@@ -208,23 +208,11 @@ Rules:
 			Maximum: 3
 			SpawnInterval: 5
 			WaterChance: 1
+			CrateActors: unitcrate
 		-SpawnMPUnits:
 		-MPStartLocations:
-	CRATE:
-		-LevelUpCrateAction:
-		-GiveMcvCrateAction:
-		-GiveUnitCrateAction@jeep:
-		-GiveUnitCrateAction@1tnk:
-		-RevealMapCrateAction:
-		-HideMapCrateAction:
-		-ExplodeCrateAction@nuke:
-		-ExplodeCrateAction@boom:
-		-ExplodeCrateAction@fire:
-		-SupportPowerCrateAction@parabombs:
-		-GiveCashCrateAction:
-		-DuplicateUnitCrateAction:
-		-GiveUnitCrateAction@squadlight:
-		-GiveUnitCrateAction@squadheavyallies:
+	UNITCRATE:
+		Inherits: ^Crate
 		GiveUnitCrateAction@pt:
 			SelectionShares: 7
 			Units: pt
diff --git a/mods/ra/maps/drop-zone/map.yaml b/mods/ra/maps/drop-zone/map.yaml
index 0d57ecd47c..69e0096052 100644
--- a/mods/ra/maps/drop-zone/map.yaml
+++ b/mods/ra/maps/drop-zone/map.yaml
@@ -189,21 +189,11 @@ Rules:
 		CrateSpawner:
 			Maximum: 3
 			SpawnInterval: 5
+			CrateActors: unitcrate
 		-SpawnMPUnits:
 		-MPStartLocations:
-	CRATE:
-		-LevelUpCrateAction:
-		-GiveMcvCrateAction:
-		-RevealMapCrateAction:
-		-HideMapCrateAction:
-		-ExplodeCrateAction@nuke:
-		-ExplodeCrateAction@boom:
-		-ExplodeCrateAction@fire:
-		-SupportPowerCrateAction@parabombs:
-		-GiveCashCrateAction:
-		-DuplicateUnitCrateAction:
-		-GiveUnitCrateAction@squadlight:
-		-GiveUnitCrateAction@squadheavysoviet:
+	UNITCRATE:
+		Inherits: ^Crate
 		GiveUnitCrateAction@ttnk:
 			SelectionShares: 4
 			Units: ttnk
diff --git a/mods/ra/maps/fort-lonestar/map.yaml b/mods/ra/maps/fort-lonestar/map.yaml
index d6130c546c..4a6a8284aa 100644
--- a/mods/ra/maps/fort-lonestar/map.yaml
+++ b/mods/ra/maps/fort-lonestar/map.yaml
@@ -482,32 +482,24 @@ Rules:
 		CrateSpawner:
 			Maximum: 1
 			SpawnInterval: 100
+			CrateActors: fortcrate
 		-SpawnMPUnits:
 		-MPStartLocations:
 		LuaScript:
 			Scripts: fort-lonestar.lua
-	CRATE:
-		-LevelUpCrateAction:
-		-GiveMcvCrateAction:
-		-RevealMapCrateAction:
-		-HideMapCrateAction:
-		-ExplodeCrateAction@nuke:
-		-ExplodeCrateAction@boom:
-		-ExplodeCrateAction@fire:
-		-GiveUnitCrateAction@jeep:
-		-GiveUnitCrateAction@arty:
-		-GiveUnitCrateAction@v2rl:
-		-GiveUnitCrateAction@1tnk:
-		-GiveUnitCrateAction@2tnk:
-		-GiveUnitCrateAction@3tnk:
-		-GiveUnitCrateAction@4tnk:
+	FORTCRATE:
+		Inherits: ^Crate
 		SupportPowerCrateAction@parabombs:
 			SelectionShares: 30
+			Proxy: powerproxy.parabombs
+			Effect: parabombs
 		HealUnitsCrateAction:
 			SelectionShares: 30
+			Notification: heal2.aud
+			Effect: heal
 		GiveCashCrateAction:
 			Amount: 400
-			UseCashTick: yes
+			UseCashTick: true
 			SelectionShares: 30
 		GiveUnitCrateAction@e7:
 			Units: e7