Recs.
Updated
Game Dev Story costs $2.50 and has zero in app purchases where the goal is to manage a video game start-up beginning in the Atari era. Carve out a genre niche, adapt to new platform releases, keep your employees creative and productive, and win fans across the world -- or at least don't go bankrupt!
SpecsUpdate
Pros
Pro Very engaging due to quick progression and frequent events
Contracts are measured in weeks and development cycles in months, but time passes at the rate of one day per second. Though the core gameplay involves watching little icons pop up over your employees' heads, rarely do five seconds go by without some player action being prudent, if not required.
Cons
Con It's very hard to fail
Your employees' salaries are waived the first year ("government subsidy") and you can go into the red to pay them after that. You can't develop a game without some initial funds, but since you can always take a contract to make money, there's basically no hole you can't crawl out of.