Pulsar is another Simon says like game where the objective is to use your memory to repeat what the computer shows you. May sound east but Pulsar will be the most challenging game you've ever played (at least it has been for me). Pulsar is unique in a way as games similar to this just use some low graphics colour picking. Pulsar has some excellently rendered graphics and not only has touch controls but you'll have to remember which direction to swing your iPhone around in. Pulsar is probably the most advanced simon says game in the app store.