The basic premise is your time machine has broken down and you have to fix it using time travel. So on each level, you have to solve a puzzle that involves setting something up, going into your time machine, and coming out again. The past you sets up what you did before, and the present you uses the set up to get to the goal . . . or works on setting up more of the solution so a future you can get to the goal.
Lots of fun. I really enjoy playing it. It involved a lot of forward thinking, cause and effect, trial and error. It's easy enough to understand quickly, but it gets challenging as you go on. It could easily become confusing, but it doesn't. Instead, it's a challenge to figure out the steps you have to take in order to get to your goal.
Last night I played up to level 8 and then went to bed. While I was trying to fall asleep, I was also trying to figure out level 8 (which I did) and this morning I quickly played level 8 to see if my plan would work (which it did).
Of course, now the gears start spinning . . . what could a TimeFlyz game look like? I've been imagining that for a while, but now to think of the possibilities of actual time travel in the game where you work side by side with a past version of yourself. I can't design games, but it's fun to think about.