FIRST ORBIT v1.1 Update

Players can now explore the inner planets Mercury and Venus

To help facilitate travel between planets, the manual has been updated with a table of phase angles for transfers to and from each planet. There is also now  a drop down for selecting the desired plotting frame.

With the addition of Mercury and Venus comes a new challenge mode: GRAND TOUR. In this mode, players are challenged to land on the Moon and every other planet, then return to Earth for a safe landing. Apart from these content additions, a number of optimizations have been made to help improve performance at high time warps