Nice concept
That was a really well told story. I liked the animation style and thought that the music was pretty fitting.
I also appreciate the title, but have you considered turning it into a question, i.e "Time to Play?". I think this would make the idea more obvious: have you actually got any time to play? etc.
Something did seem a little odd with the other robots though. The colour palette and mood we're both quite cool and the music was as well to a certain extent. I was expecting some slightly darker moments. I was expecting some sort of confrontation between the two at some point.
Finally, i'm just curious, do the robots know they only have an hour to live?