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

NadekoBot.Core/Modules/Gambling/Common/CurrencyEvents/SneakyEvent.cs

@@ -0,0 +1,99 @@
+using Discord;
+using Discord.Commands;
+using Discord.WebSocket;
+using NadekoBot.Common;
+using NadekoBot.Common.Collections;
+using NadekoBot.Core.Services;
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace NadekoBot.Modules.Gambling.Common.CurrencyEvents
+{
+    public class SneakyEvent : CurrencyEvent
+    {
+        public event Action OnEnded;
+        public string Code { get; private set; } = string.Empty;
+        private readonly ConcurrentHashSet<ulong> _sneakyGameAwardedUsers = new ConcurrentHashSet<ulong>();
+
+        private readonly char[] _sneakyGameStatusChars = Enumerable.Range(48, 10)
+            .Concat(Enumerable.Range(65, 26))
+            .Concat(Enumerable.Range(97, 26))
+            .Select(x => (char)x)
+            .ToArray();
+
+        private readonly CurrencyService _cs;
+        private readonly DiscordSocketClient _client;
+        private readonly IBotConfigProvider _bc;
+        private readonly int _length;
+
+        public SneakyEvent(CurrencyService cs, DiscordSocketClient client,
+            IBotConfigProvider bc, int len)
+        {
+            _cs = cs;
+            _client = client;
+            _bc = bc;
+            _length = len;
+        }
+
+        public override async Task Start(IUserMessage msg, ICommandContext channel)
+        {
+            GenerateCode();
+
+            //start the event
+            _client.MessageReceived += SneakyGameMessageReceivedEventHandler;
+            await _client.SetGameAsync($"type {Code} for " + _bc.BotConfig.CurrencyPluralName)
+                .ConfigureAwait(false);
+            await Task.Delay(_length * 1000).ConfigureAwait(false);
+            await Stop().ConfigureAwait(false);
+        }
+
+        private void GenerateCode()
+        {
+            var rng = new NadekoRandom();
+
+            for (var i = 0; i < 5; i++)
+            {
+                Code += _sneakyGameStatusChars[rng.Next(0, _sneakyGameStatusChars.Length)];
+            }
+        }
+
+        public override async Task Stop()
+        {
+            try
+            {
+                _client.MessageReceived -= SneakyGameMessageReceivedEventHandler;
+                Code = string.Empty;
+                _sneakyGameAwardedUsers.Clear();
+                await _client.SetGameAsync(null).ConfigureAwait(false);
+            }
+            catch { }
+            finally
+            {
+
+                OnEnded?.Invoke();
+            }
+        }
+
+        private Task SneakyGameMessageReceivedEventHandler(SocketMessage arg)
+        {
+            if (arg.Content == Code &&
+                _sneakyGameAwardedUsers.Add(arg.Author.Id))
+            {
+                var _ = Task.Run(async () =>
+                {
+                    await _cs.AddAsync(arg.Author, "Sneaky Game Event", 100, false)
+                        .ConfigureAwait(false);
+
+                    try { await arg.DeleteAsync(new RequestOptions() { RetryMode = RetryMode.AlwaysFail }).ConfigureAwait(false); }
+                    catch
+                    {
+                        // ignored
+                    }
+                });
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}