Sinvaders
I had a similar idea that I explained to some people. Everyone was interested by the idea :)
I'm curious to hear it.
Revvy
To add to your idea Kaetemi:
Allow players to teleport on the possessed outpost to give building (and the whole system) a great value.
That may need to be restricted to only serve players who don't have DP - to avoid the 'infinite lives' battle.
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Kaetemi