We could play Time Travelling Team or 
The Triple TTT (this is the whole name, not 2 different ones).

Its basically about ppl from different ages meeting possibly at a bar, hearing a story, and finding an abandoned time machine complex. Just then they realize they came from different eras, and try to make the machine work. Then an AI will make em help in different timelines, where things would go rough and change the way that event would happen IRL or made up.