Fortunately, Run 3 is great.
|Use the lizard. Always use the lizard.|
It takes what was great about the first Run and makes it better, while taking away the stuff that wasn't too good from Run 2 (or, at least, introducing those things more slowly, so they're easier to adjust to). Add to that a colossal amount of new (and awesome) features, along with continual updates, and you've got a game that lasts and lasts.
The Run series has you take control of a little alien guy running along a track in space. All you have to do is avoid the potholes and make it to the end of the course. You have your choice of two basic characters: the jumper, who goes a moderate speed but can clear some good-sized gaps, and the skater, who is faster but can't jump as high (so he's a bit more of the "expert mode"). In Run 3, you can unlock lots more characters with different abilities, including a child which lets you run over crumbling tiles without crumbling them, and a pastafarian who can cross empty spaces for a limited time.
Explore Mode has you moving through carefully designed levels, with the goal of trying to make it to the proper end of a branching maze of tracks. New tracks get added slowly, so even after you've completed all there is to complete, you can come back in a month and see what's new. Just recently a level pack called "Low Power Tunnels" came out, which has tiles that fade to black against a starry background, making them hard to see and harder to land on.
Infinite Mode is more about getting a high score--that is, getting as far as possible. As you go, the pattern of the levels changes to become more challenging, so just when you think you're a master at it, you get something new.
On top of that, users can create and share levels, so there's always more and more to do.