If you still want some good names:
Navigator, explorer , Big fight
If you have some great color combination in each of these rooms, you may go by 'Yellow Room', 'Blue Room' etc
I would suggest you first take a call on the number of rooms. This will help u decide the best option.
eg. if it is one room - you can call it anything among the wonderful suggestions given here.
If it is 2-3 and likely to go up to a max of 5 - you can try the five elements - like wind, water, fire, sky & earth
Between 5-9 you can use the planets, or use the actual Greek names of these planets.
Hope this would help.
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