diff --git a/assets/materials/static.skm.yaml b/assets/materials/static.skm.yaml
index dcf4667..eae68ed 100644
--- a/assets/materials/static.skm.yaml
+++ b/assets/materials/static.skm.yaml
@@ -313,7 +313,7 @@ materials:
       fmt: G_IM_FMT_RGBA
       siz: G_IM_SIZ_32b
 
-    gDPSetRenderMode: G_RM_ZB_XLU_SURF
+    # gDPSetRenderMode: G_RM_ZB_XLU_SURF
 
     gDPSetCombineMode:
       color: ["0", "0", "0", "TEXEL0"]
diff --git a/assets/models/grav_flare.blend b/assets/models/grav_flare.blend
index d2a5d7f..5db7d9b 100644
Binary files a/assets/models/grav_flare.blend and b/assets/models/grav_flare.blend differ
diff --git a/src/scene/ball.c b/src/scene/ball.c
index 6abb331..6a8b2d9 100644
--- a/src/scene/ball.c
+++ b/src/scene/ball.c
@@ -7,6 +7,7 @@
 #include "../physics/collision_box.h"
 
 #include "../build/assets/models/grav_flare.h"
+#include "../build/assets/models/cube/cube.h"
 #include "../build/assets/materials/static.h"
 
 #define BALL_RADIUS 0.1f
@@ -42,9 +43,11 @@ void ballInitInactive(struct Ball* ball) {
 }
 
 void ballInit(struct Ball* ball, struct Vector3* position, struct Vector3* velocity, short startingRoom) {
-    // collisionObjectInit(&ball->collisionObject, &gBallCollider, &ball->rigidBody, 1.0f, COLLISION_LAYERS_TANGIBLE | COLLISION_LAYERS_BLOCK_BALL);
+    collisionObjectInit(&ball->collisionObject, &gBallCollider, &ball->rigidBody, 1.0f, 0);
 
-    // collisionSceneAddDynamicObject(&ball->collisionObject);
+    collisionSceneAddDynamicObject(&ball->collisionObject);
+
+    ball->rigidBody.flags |= RigidBodyDisableGravity;
 
     ball->rigidBody.velocity = *velocity;
     ball->rigidBody.transform.position = *position;
@@ -59,6 +62,10 @@ void ballInit(struct Ball* ball, struct Vector3* position, struct Vector3* veloc
     dynamicSceneSetRoomFlags(ball->dynamicId, ROOM_FLAG_FROM_INDEX(startingRoom));
 }
 
+void ballTurnOnCollision(struct Ball* ball) {
+    ball->collisionObject.collisionLayers |= COLLISION_LAYERS_BLOCK_BALL;
+}
+
 void ballUpdate(struct Ball* ball) {
     if (ball->targetSpeed == 0.0f) {
         return;
@@ -79,4 +86,8 @@ void ballUpdate(struct Ball* ball) {
 
 int ballIsActive(struct Ball* ball) {
     return ball->targetSpeed != 0.0f;
+}
+
+int ballIsCollisionOn(struct Ball* ball) {
+    return ball->collisionObject.collisionLayers != 0;
 }
\ No newline at end of file
diff --git a/src/scene/ball.h b/src/scene/ball.h
index ffc4c56..b696a35 100644
--- a/src/scene/ball.h
+++ b/src/scene/ball.h
@@ -12,8 +12,10 @@ struct Ball {
 
 void ballInitInactive(struct Ball* ball);
 void ballInit(struct Ball* ball, struct Vector3* position, struct Vector3* velocity, short startingRoom);
+void ballTurnOnCollision(struct Ball* ball);
 
 void ballUpdate(struct Ball* ball);
 int ballIsActive(struct Ball* ball);
+int ballIsCollisionOn(struct Ball* ball);
 
 #endif
\ No newline at end of file
diff --git a/src/scene/ball_launcher.c b/src/scene/ball_launcher.c
index aa967b7..52b0063 100644
--- a/src/scene/ball_launcher.c
+++ b/src/scene/ball_launcher.c
@@ -85,8 +85,21 @@ void ballLauncherUpdate(struct BallLauncher* launcher) {
     if (!ballIsActive(&launcher->currentBall) && signalsRead(launcher->signalIndex)) {
         struct Vector3 initialVelocity;
         quatMultVector(&launcher->rigidBody.transform.rotation, &gUp, &initialVelocity);
-        vector3Scale(&initialVelocity, &initialVelocity, BALL_VELOCITY);
+        vector3Scale(&initialVelocity, &initialVelocity, -BALL_VELOCITY);
 
         ballInit(&launcher->currentBall, &launcher->rigidBody.transform.position, &initialVelocity, launcher->rigidBody.currentRoom);
     }
+
+    if (ballIsActive(&launcher->currentBall) && !ballIsCollisionOn(&launcher->currentBall)) {
+        struct Simplex simplex;
+        if (!gjkCheckForOverlap(
+            &simplex, 
+            &launcher->collisionObject, 
+            minkowsiSumAgainstObject,
+            &launcher->currentBall.collisionObject,
+            minkowsiSumAgainstObject,
+            &launcher->currentBall.rigidBody.velocity)) {
+            ballTurnOnCollision(&launcher->currentBall);
+        }
+    }
 }
\ No newline at end of file