diff --git a/src/InterfaceAdapter/Gaas.GobbletGobblers.Core.WebApi/Controllers/GameController.cs b/src/InterfaceAdapter/Gaas.GobbletGobblers.Core.WebApi/Controllers/GameController.cs
index 1bf91a7..c710767 100644
--- a/src/InterfaceAdapter/Gaas.GobbletGobblers.Core.WebApi/Controllers/GameController.cs
+++ b/src/InterfaceAdapter/Gaas.GobbletGobblers.Core.WebApi/Controllers/GameController.cs
@@ -25,6 +25,11 @@ public GameController(ILogger<GameController> logger, IRepository repository)
         [Route("~/games")]
         public async Task<dynamic> GamesAsync(GameRequest request)
         {
+            if (request.Players.Count != 2)
+            {
+                throw new Exception("Requires at least two players to play");
+            }
+
             var createGameRequest = new CreateGameRequest
             {
                 PlayerId = new Guid(Convert.FromBase64String(request.Players[0].Id).Take(16).ToArray()),