Games programmer, John Adams, has recently released three on-line switch games, under the banner "One Switch Games" (nothing to do with OneSwitch.org.uk). They are...
Frosty the Snowman - Slow paced game, putting you as a snowman constantly walking from left to right, where you have to jump over sometimes unfairly placed objects.
Turtle Crossing - A 3D version of Nintendo's ancient Turtle Bridge game, but much easier. Keep an eye on the fish for an idea of when a turtle may dive.
Filberts Food Fenzy - A targeting game based on the even more ancient Gremlin/SEGA game Frogs.
You can comment on these games at the Unity forums, to give John advice, thoughts and encourgement.