Board Thread:Questions and Answers/@comment-91.145.107.5-20130511074649/@comment-4848837-20130511173611

A Research ("Unlock") page does seem beneficial. Having it in all in order of what's required to be unlocked is definitely important, too.

There can also definitely be a Timeline ("Progress") page that shows the whole list of things that will be released to the player as they progress through the game, whether they are locked to a certain date (like platform releases on the 25Y, 30Y, and 35Y games), or if they are user-triggered things.

As for your dilemma with not being given the option to move onto the level 4 (the technology park/the last office), unfortunately, the game is quite linear is progression. It is likely due to the fact that you didn't create enough 3D games that you didn't progress, but I could be wrong. You seem to have made quite the amount of cash in your time. Just wondering, did you get high-scoring games throughout your lifetime?