Can you add an end game where if you've killed the train and unlocked all the vehicles you go into infinite mode with all vehicles rolling and the game throws everything at you?
This game is a good idea, but the way your implementing it with the have to buy time to play more days is not good. I like it and would be willing to pay a one time fee for it to be completely open for me. I'd pay $10 for the full game totally unlocked, but not $10 to advance a bit and have to pay more. Do like Mojang (Minecraft) did and let people support you one time, not gouge them constantly.
Forgot to add that you need to get the blue book from the bookshelf above the computer. Read the book and then the hole on 2nd floor stair will open up.
Also, key in linen closet opens the cabinet next to the bed.
Here's the walkthrough. Get key from under pillow on bed. Open linen closet. get key in closet under towel to open drawer in closet. grab glass from sink in kitchen and 'slider' under coffee table leg. turn on water in upstairs bathroom sink and put 'slider' in sink drain. put glass in sink and get password to computer. put number from computer in drawer at computer desk. Get golf club next to kitchen cabinet. put golf tee in hole next to stairs. put golf ball on tee. use golf club on ball. get key from broken pieces in kitchen and open door. Your free! Thank God!