Four space milestones. Earliest to latest. No hints.
Move the four cards into chronological order using the arrow buttons. Submit once. Your score is the fraction of event pairs in the correct order.
No sign-up. No deposit. No cash prizes.
Move the four cards into chronological order using the arrow buttons. Submit once. Your score is the fraction of event pairs in the correct order.
Use the up and down controls to arrange the four cards from the earliest event to the latest, then submit the order. The score is based on the proportion of event pairs in the right order. The source links let you explore the mission history after playing.
No account, download, purchase or deposit is required. The same game, date and content version reproduce the same challenge. Replays are labelled separately from a first attempt in the retained local history. Scores are local, not verified leaderboard results. There are no cash prizes.
