Daily Challenge Cheats?

Last 3 days running I've looked at the leader for the daily challenge, and they win 3 sols before the next person.  When I watch the replay, they are either injecting 500k at various points or setting the cash to what looks like infinite and then going from there.  It is a bit sad that this is happening; I really enjoy Civ's game of the month, and was really looking forward to being able to play the daily challenge and then watch replays to compare and get better.  Not knowing which games were done without cheating and which ones weren't tarnish that shiny feeling I had