You really suck at the naming game VD.
The New World worked because it was ostensibly about finding a second Earth but was a conceit that actually referred to the "world" of the colony ship (the colony ship and its unusual, evolving society is the "New World" -- the second Earth that the player character will never see was a just a thematic red herring).
Don't think there's another combination of English words out there that will do the same thing for this game. Colony Ship - A Post Earth Role Playing Game is:
(a) charmingly utilitarian and straightforward, the same as the original Fallout
(b) not cheesy, the same as the original Fallout
(c) a timely, appropriate, and catchy homage to the original Fallout
(d) probably captures the spirit of the game more than any of the cheesy proposals do. It's a narrative-driven game set on a colony ship where you assemble your own experiences from choices you make during role-playing.