Using before launch increases hype (sales boost). Using Review at launch is standard. Using Interview mid-lifecycle helps with small fan base games only.
Tactics:
Old guides scream "Rush AI!" In 1.7.6, AI is only useful for Simulation games. Do not research AI until you have the medium office. game dev tycoon guide 1.7.6
Don't release the same Topic/Genre combo back-to-back, or your "New Story" bonus will be penalized. Using before launch increases hype (sales boost)