1. Angry Birds
Angry Birds is easy to learn but impossible to stop playing.
Instagram lets you take photos, add neat-looking filters to them, and upload them.
Instapaper lets you save articles and websites from your web browser to “read later” on your iPhone or iPad with a great reading experience.
4. The Incident
The Incident is a sort-of Super Mario-looking 8-bit game where you use the iPhone’s touchscreen and motion sensor to jump up a pile of falling item.
Scrabble is a great time killer, and lets you play against friends on their iPhones.