diff --git a/zig-impl/crystal/some-crystal-app/src/pongd.cr b/zig-impl/crystal/some-crystal-app/src/pongd.cr
new file mode 100644
index 0000000..c8bb255
--- /dev/null
+++ b/zig-impl/crystal/some-crystal-app/src/pongd.cr
@@ -0,0 +1,38 @@
+require "./some-crystal-app.cr"
+
+# In 5 messages: quit
+count = 5
+
+ipc = IPC.new
+fd = ipc.service_init("pong")
+
+ipc.loop do |event|
+	case event.type
+	when LibIPC::EventType::MessageRx
+		m = event.message
+		if m.nil?
+			puts "No message"
+		else
+			received = String.new(m.to_unsafe, m.size)
+			pp! received
+			ipc.schedule event.fd, m, m.size
+		end
+
+	when LibIPC::EventType::MessageTx
+		puts "A message has been sent"
+		count -= 1
+		if count == 0
+			exit
+		end
+
+	when LibIPC::EventType::Connection
+		puts "A client just connected #JOY"
+
+	when LibIPC::EventType::Disconnection
+		puts "A client just disconnected #SAD"
+
+	else
+		puts "Unexpected: #{event.type}"
+		exit 1
+	end
+end