Developers frequently release codes for free rewards. For example, codes like Gruffalo (10 Diamonds) and subtoveddev (250 Cash) are often available. Check the Restaurant Tycoon 2 Wiki for current lists. Optimization Strategies:

Typically, a video with this exact phrasing is advertising one of three things:

"An Empirical Analysis of Consumer Behavior in Free-to-Play Games: A Case Study of 'Zelda Hub Restaurant Tycoon 2' with 348k Views"