diff --git a/src/simulator/api-gdext/src/ai.rs b/src/simulator/api-gdext/src/ai.rs
index f14b518c..e82a878e 100644
--- a/src/simulator/api-gdext/src/ai.rs
+++ b/src/simulator/api-gdext/src/ai.rs
@@ -1075,6 +1075,7 @@ mod tests {
             resource: None,
             is_coast: false,
             owner: None,
+            explored: true,
         }
     }
 
diff --git a/src/simulator/api-gdext/tests/ai_controller.rs b/src/simulator/api-gdext/tests/ai_controller.rs
index c702e809..fb638b7f 100644
--- a/src/simulator/api-gdext/tests/ai_controller.rs
+++ b/src/simulator/api-gdext/tests/ai_controller.rs
@@ -79,6 +79,7 @@ fn minimal_tactical_state_json_parses() {
         unit_catalog: Vec::new(),
         building_catalog: Vec::new(),
         difficulty_threshold_mult: 1.0,
+        embark_level: Default::default(),
     };
     let json = serde_json::to_string(&minimal).expect("serialize");
     let parsed = parse_tactical_state_json(&json).expect("parse");
diff --git a/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs b/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs
index b688a6cf..29644ac3 100644
--- a/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs
+++ b/src/simulator/crates/mc-mod-host/tests/wasm_controller_limits.rs
@@ -31,6 +31,7 @@ fn empty_state() -> TacticalState {
         unit_catalog: Vec::new(),
         building_catalog: Vec::new(),
         difficulty_threshold_mult: 1.0,
+        embark_level: Default::default(),
     }
 }
 
diff --git a/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs b/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs
index ef313494..dbd83655 100644
--- a/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs
+++ b/src/simulator/crates/mc-mod-host/tests/wasm_controller_noop.rs
@@ -23,6 +23,7 @@ fn empty_state() -> TacticalState {
         unit_catalog: Vec::new(),
         building_catalog: Vec::new(),
         difficulty_threshold_mult: 1.0,
+        embark_level: Default::default(),
     }
 }
 
diff --git a/src/simulator/crates/mc-worldsim/src/event_dispatch.rs b/src/simulator/crates/mc-worldsim/src/event_dispatch.rs
index d0433df7..3a7bceec 100644
--- a/src/simulator/crates/mc-worldsim/src/event_dispatch.rs
+++ b/src/simulator/crates/mc-worldsim/src/event_dispatch.rs
@@ -322,6 +322,8 @@ mod tests {
             migration_differential_min: 3.0,
             migration_trigger_chance: 1.0,
             migration_max_hops: 3,
+            migration_drought_factor: 0.0, // disable drought coupling in this helper
+            migration_drought_max: 1.0,
         }
     }