Hello, I am glad you had fun!
Yeah, the time can let you play quite a while. My personal high score is about 8000 or so. I'm not sure if you can play infinitely. But I think the way the math is eventually you will run out of time. (not sure on that we didn't test it all that much.) We were going to have different difficulties or other game play modes but ended up chopping them out for smoother/faster entrance into the game. Maybe we could expand on the idea for a later game. (Maybe make the Dark souls of slide games.)
We are trying to make a bunch of games to play like the old flash arcades. Thanks for playing!