I always use temporal tech, take the "Scientists" trait, and max out research. I'll also use the propulsion bonus trait. I set Strength to 120% in this Last game, just for grins (besides, I LIKE ground combat - taking over my opponent's world is just as much fun as glassing it). I also usually increase construction speed. Really helps when you get those Temporal Space Yards
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I'm still working on a research strategy. I had one nearly disastrous game going where I didn't get PDC's early enough, and the Terrans really put a dent in my empire before I glassed 'em. Silly humans...