Answers
1. In the 1980 I would have developed a platform game like Donkey Kong or Mario Bros.
2. The 1980 Final Fantasy was 2D which is different to now.
The 1990 Final Fantasy was in 3D but the enviroment had no difference to the 1980 except from the 3D prospective even the mission ( Objectives ) where the same
The 2004 Final Fantasy was in the so called (sixth generation of consoles) except for the look ( graphics)the game enviorment is still the same as it was back in the 1980.
3.Halo Reach( FPS ) The goals are to kill or save someone or something ( house,car .ect.). The setting is usually in a ( war zone, jungle, snow, past, future , present,but now days it is more in the desert,with Halo it is on a planet called Reach.)puzzles in a FPS could be how do I get past the group in front, do I go straight in or on the roof tops. In a FPS the risk-reward system could be you get a new weapon or you get points to upgrade your weapons.
Need for speed ( Racing games) The setting on a race game is usually is the track ( race course ) but now days it is more about free riding in a big world ( city), the race course could be anywhere from snow mountain tops to in the city but the foucs is the race track. The goal would be to finish First. My puzzles in a racing game would be how fast should I go around this corner or when should I break, risk-reward system here would be to get a better car or get money to upgrade your car.
Sim city (Simulation) the goals in these sort of game could vary but in sim city you have to try to build your own city from the houses to the prison yard. the bigger the city the more stuff you get as a reward. puzzles in this game could be the weather or just some angry people complain about the roads.
That is all from "CH1" now to my Story, game Enviroment.