Half-Life...
	Pong...
	Treasure Hunter...
	Various Achievements...

Name a game "half life" or "half-life" (case insensitive) while in the third office (after PC upgrade, before tech park).

Make a game named "Pong" (case doesn't matter) while in the garage. While coding the graphics part, the animation on the wall will play.

Activate the treasure egg in the garage.

Achievement	How to unlock
100k Engine	Invest over 100k in a new game engine.
1m Engine	Invest over 1m in a new game engine.
500k Engine	Invest over 500k in a new game engine.
Cult Status	Set a new standard for the early gaming industry.
Detective	Find at least one of the easter egg in the game.
Diamond	Sell half ten milion copies of a game without the help of a publisher.
Diversity	Have male and female staff.
Eat Cake	Show them red barrels some action.
Famous	Hire someone famous.
Fan	Pick an inspired company name.
Full House	Have the maximum number of employees.
Game Dev Tycoon	Finish the game.
Gold	Sell half a milion copies of a game without the help of a publisher.
Good Judgement	Create a game with a good theme/genre combination.
Inception	Develop the game within the game.
Legend	Reach level 10 with a character.
Perfect Game	Release a game with a clean score of 10.
Platinum	Sell a milion copies of a game without the help of a publisher.
Professional	Reach level 5 with a character.
Supporter	Support a young start-up. Buy the game.
Versatile	Release a successful game in each of the give main genres.