Prepare for fierce aerial combat with aircraft that span the years since the dawn of aviation. Your timeship's first encounter is with ancient 1910 biplanes; you're outnumbered, but your weapons are superior. Eliminate the entire air fleet; then knock out a mighty zeppelin and you'll progress to the next stage: 1940 monoplanes. These World War II fighters present a tougher challenge, and if you can defeat them, you'll move on to 1970 helicopters. Down the choppers and warp ahead to meet 1983 super jets. If you find a way to beat them, you'll cross the final barrier and head into the future...

Prepare for fierce aerial combat with aircraft that span the years since the dawn of aviation. Your timeship's first encounter is with ancient 1910 biplanes; you're outnumbered, but your weapons are superior. Eliminate the entire air fleet; then knock out a mighty zeppelin and you'll progress to the next stage: 1940 monoplanes. These World War II fighters present a tougher challenge, and if you can defeat them, you'll move on to 1970 helicopters. Down the choppers and warp ahead to meet 1983 super jets. If you find a way to beat them, you'll cross the final barrier and head into the future for a deep-space duel with deadly flying saucers from the year 2001!