Some Game Topics I beleive should be in Game Dev Tycoon:
Feel Free to Add you Own and I will Update The List
Action:
Shooter (Call of Duty, Doom, Counterstrike)
Breakout (aka Arkanoid style games)
Fighting (Super smash Bros or Streetfighter)
Platform (Mario, Sonic, Rayman)
Scroll Shooters (Space Invaders)
Adventure:
Stealth (Castle Wolfenstein, Metal Gear Solid, Assassin’s Creed)
Sandbox (Grand Theft Auto)
Strategy:
4X (Civilization, Master of Orion, Sword of the Stars)
Real-time strategy (RTS) ( Age of Empires, Warcraft)
Cards (Yu-gi-oh, Casino Games, Poker)
Turn Based Strategy (Advanced Wars, Final Fantasy Tactics, Fire Emblem)
Casual:
Arcade ( Pacman)
Social (Mario Party)
Puzzle (Bejeweled, Tetris, Zuma)
Physics ( World of Goo, Crayon Physics Deluxe, Angry Birds, Cut the Rope and Peggle.)
Hidden object (Dream Chronicles, Hidden Expedition, Mystery Case Files)
Pinball
Childhood (Leapfrog Games)