Removed module projects because it can't work like that atm. Commented out package commands.

NadekoBot.Core/Modules/Games/Common/ChatterBot/ChatterBotResponse.cs

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+namespace NadekoBot.Modules.Games.Common.ChatterBot
+{
+    public class ChatterBotResponse
+    {
+        public string Convo_id { get; set; }
+        public string BotSay { get; set; }
+    }
+}

NadekoBot.Core/Modules/Games/Common/ChatterBot/ChatterBotSession.cs

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+using System.Net.Http;
+using System.Threading.Tasks;
+using NadekoBot.Common;
+using NadekoBot.Extensions;
+using Newtonsoft.Json;
+
+namespace NadekoBot.Modules.Games.Common.ChatterBot
+{
+    public class ChatterBotSession : IChatterBotSession
+    {
+        private static NadekoRandom Rng { get; } = new NadekoRandom();
+
+        private readonly string _chatterBotId;
+        private int _botId = 6;
+
+        public ChatterBotSession()
+        {
+            _chatterBotId = Rng.Next(0, 1000000).ToString().ToBase64();
+        }
+
+        private string apiEndpoint => "http://api.program-o.com/v2/chatbot/" +
+                                      $"?bot_id={_botId}&" +
+                                      "say={0}&" +
+                                      $"convo_id=nadekobot_{_chatterBotId}&" +
+                                      "format=json";
+
+        public async Task<string> Think(string message)
+        {
+            using (var http = new HttpClient())
+            {
+                var res = await http.GetStringAsync(string.Format(apiEndpoint, message)).ConfigureAwait(false);
+                var cbr = JsonConvert.DeserializeObject<ChatterBotResponse>(res);
+                return cbr.BotSay.Replace("<br/>", "\n");
+            }
+        }
+    }
+}

NadekoBot.Core/Modules/Games/Common/ChatterBot/CleverbotResponse.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Modules.Games.Common.ChatterBot
+{
+    public class CleverbotResponse
+    {
+        public string Cs { get; set; }
+        public string Output { get; set; }
+    }
+}

NadekoBot.Core/Modules/Games/Common/ChatterBot/IChatterBotSession.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Modules.Games.Common.ChatterBot
+{
+    public interface IChatterBotSession
+    {
+        Task<string> Think(string input);
+    }
+}

NadekoBot.Core/Modules/Games/Common/ChatterBot/OfficialCleverbotSession.cs

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+using Newtonsoft.Json;
+using System.Net.Http;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Modules.Games.Common.ChatterBot
+{
+    public class OfficialCleverbotSession : IChatterBotSession
+    {
+        private readonly string _apiKey;
+        private string _cs = null;
+
+        private string queryString => $"https://www.cleverbot.com/getreply?key={_apiKey}" +
+            "&wrapper=nadekobot" +
+            "&input={0}" +
+            "&cs={1}";
+
+        public OfficialCleverbotSession(string apiKey)
+        {
+            this._apiKey = apiKey;
+        }
+
+        public async Task<string> Think(string input)
+        {
+            using (var http = new HttpClient())
+            {
+                var dataString = await http.GetStringAsync(string.Format(queryString, input, _cs ?? "")).ConfigureAwait(false);
+                var data = JsonConvert.DeserializeObject<CleverbotResponse>(dataString);
+                _cs = data?.Cs;
+                return data?.Output;
+            }
+        }
+    }
+}