GameStorage and GamePlayerPrefs implementations that use Soomla KeyValueStorage to store the key value pairs

GamePlayerPrefs

/// Copyright (C) 2012-2014 After Insanity Studios
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///      http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.

using System;

public static class GamePlayerPrefs {

	public static void Save() {
		//no-op as db saves automatically
	}
	
	public static string GetString(string key, string def = "") {
		return GameStorage.GetValue(key, def);
	}
	
	public static int GetInt(string key, int def = 0) {
		return GameStorage.GetValue(key, def);
	}
	
	public static float GetFloat(string key, float def = 0f) {
		return GameStorage.GetValue(key, def);
	}
	
	public static bool GetBool(string key, bool def = false) {
		return GameStorage.GetValue(key, def);
	}

	public static void SetString(string key, string val) {
		GameStorage.SetValue(key, val);
	}
	
	public static void SetInt(string key, int val) {
		GameStorage.SetValue(key, val);
	}
	
	public static void SetFloat(string key, float val) {
		GameStorage.SetValue(key, val);
	}
	
	public static void SetBool(string key, bool val) {
		GameStorage.SetValue(key, val);
	}
	
	public static bool HasKey(string key) {
		string val = GameStorage.GetValue(key, null);
		return val != null;
	}
	
	public static void DeleteKey(string key) {
		GameStorage.DeleteKeyValue(key);
	}

	public static void DeleteAll() {
		throw new Exception("DeleteAll is not possible with this version of GamePlayerPrefs");
	}
}

GameStorage

/// Copyright (C) 2012-2014 After Insanity Studios
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///      http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.

using System;

using Database = Soomla.KeyValueStorage;

public static class GameStorage {

	private const string GAME_KEY_PREFIX = "game.";

	public static string GetValue(string key, string def = "") {
		string result = Database.GetValue(GenerateDBKey(key));
		if (string.IsNullOrEmpty(result))
			result = def;
		
		return result;
	}
	
	public static int GetValue(string key, int def = 0) {
		return Convert.ToInt32(GetValue(key, Convert.ToString(def)));
	}
	
	public static float GetValue(string key, float def = 0f) {
		return (float)Convert.ToDouble(GetValue(key, Convert.ToString(def)));
	}
	
	public static bool GetValue(string key, bool def = false) {
		return Convert.ToBoolean(GetValue(key, Convert.ToString(def)));
	}

	public static void SetValue(string key, string val) {
		Database.SetValue(GenerateDBKey(key), val);
	}
	
	public static void SetValue(string key, int val) {
		SetValue(key, Convert.ToString(val));
	}
	
	public static void SetValue(string key, float val) {
		SetValue(key, Convert.ToString(val));
	}
	
	public static void SetValue(string key, bool val) {
		SetValue(key, Convert.ToString(val));
	}

	public static void DeleteKeyValue(string key) {
		Database.DeleteKeyValue(GenerateDBKey(key));
	}
	
	private static string GenerateDBKey(string key) {
		return string.Format("{0}{1}", GAME_KEY_PREFIX, key);
	}
}

In my personal version of PlayerPrefs I also have methods to save lists/arrays and dictionaries. I haven't added those to GamePlayerPrefs ... yet

Forgot the Save() function - which is a no-op but should still be there for completeness