Game ruined by non-stop ads To unlock a station - 30 sec ad To upgrade yourself - 30 sec ad To upgrade a station - 30 sec ad At random every 2-4 mins - 10-30 sec ad. The upgrades give you the option of paying with money earned in-game or an ad. The ads in this game completely ruin it, just as you're getting into it bam another ad. It's a shame really, the game was a fun way to kill some time. Presently however if you've got 5 mins to kill playing this you'll get 2 mins of play 3 mins of ads.