You can get additional credits using "Facebook" credits. If you check out Facebook credits on your homepage, there will be ways to earn them for free, such as doing surveys. Hope this helps and have a great day.
House Credits can definitely be earned without purchasing them. They can be earned by completing missions and also by adding friends who accept your invitation to the game. Purchasing them only speeds up gameplay.
Why can't you continue without House credits? Explain, please.
House MD Team
There are things that pop up were you need items and the only way to get them is House credits, thing in the shop should be buyable with money to. were are we going to get 79 credits for something. its bad enough your energy runs out so fast and doesnt come back fast at all but to get anything worth buying to replenish your energy costs credits. the money seems useless exept for paying house for a test and buying pills.
But in order to complete missions you often need to buy supplies (drugs, oxygen masks, etc...) which cost credits. As far as adding friends; the game isn't nearly as popular as others so if no one accepts the 'colleague' request - as it's termed in the game - you are, again, stuck with the only option of spending real money. Can't a promo code just be generated and released to the people who do really enjoy the game so we can continue to play? I'd appreciate your thoughts on this - thanks for your help in advance.