Added a collider to the tiles, and created a makeshift player controller to test it.

Changed the level generation to be centered.

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Assets/scripts/HexSpawner.cs

@@ -29,17 +29,23 @@ public class HexSpawner : MonoBehaviour {
 		GameObject hex;
 		RuneBehaviour rune;
 		int index = 0;
+
+		float xOffset = numColumns * 1.5f * dimension / 2f;
+		float yOffset = numRows * 1f * ratio * dimension / 2f;
+
 		for (int row = 0; row < numRows; row++)
 		{
 			for (int col = 0; col < numColumns; col++)
 			{
-				hex = GameObject.Instantiate(hexagon, transform.position + 
+				hex = GameObject.Instantiate(hexagon) as GameObject;
-					new Vector3(
-						(3f*dimension*col + 1.5f*dimension * (row%2)) * xScale,
-						(row * ratio * dimension) * yScale, 0f),
-					Quaternion.identity) as GameObject;
-				hex.transform.localScale = new Vector3(xScale, yScale, 1f);
 				hex.transform.parent = transform;
+				hex.transform.localScale = new Vector3(xScale, yScale, 1f);
+
+				hex.transform.localPosition = new Vector3(
+						(3f * dimension * col + 1.5f * dimension * (row % 2)) * xScale - xOffset,
+						(row * ratio * dimension) * yScale - yOffset, 0f);
+
+				hex.transform.localRotation = Quaternion.identity;
 
 				rune = hex.GetComponent<RuneBehaviour>();
 				rune.SetSymbol(randomNums[index++]);

Assets/scripts/PlayerControllerSR.cs

@@ -0,0 +1,33 @@
+using UnityEngine;
+using System.Collections;
+
+public class PlayerControllerSR : MonoBehaviour {
+
+	private Rigidbody rb;
+
+	// Use this for initialization
+	void Start () {
+		rb = GetComponent<Rigidbody>();
+	}
+	
+	// Update is called once per frame
+	void Update () {
+	}
+
+	void FixedUpdate()
+	{
+		if (Input.GetKey(KeyCode.A))
+			rb.AddForce(-transform.right * 5);
+		if (Input.GetKey(KeyCode.D))
+			rb.AddForce(transform.right * 5);
+		if (Input.GetKey(KeyCode.S))
+			rb.AddForce(transform.forward * 5);
+		if (Input.GetKey(KeyCode.W))
+			rb.AddForce(-transform.forward * 5);
+	}
+
+	void OnTriggerEnter(Collider col)
+	{
+		Debug.Log(col.gameObject.GetComponent<RuneBehaviour>().letterNum);
+	}
+}

Assets/scripts/PlayerControllerSR.cs.meta

@@ -0,0 +1,12 @@
+fileFormatVersion: 2
+guid: b33743cc22e241142886a7758ce5dc74
+timeCreated: 1454177489
+licenseType: Free
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/scripts/RuneBehaviour.cs

@@ -5,7 +5,7 @@ public class RuneBehaviour : MonoBehaviour {
 
 	public static float range;
 	public SpriteRenderer symbol;
-	private int letterNum;
+	public int letterNum;
 
 	// Use this for initialization
 	void Start () {