The Primus engine (anouncement) is one that you can win in lotteries or sometimes get when buying gold. It adapts with abilities to each era it is in. The following stats are for various eras.

Primus 810100.jpg Era Tractive Force Reliability Acceleration Max Speed
1 5 95 13 90
2 6 95 13 115
3 8 95 13 125
4 10 95 13 145
5 12 95 13 155
6 15 95 13 250
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