I was just playing Game Dev Tycoon like one does and I noticed that in the Hardware Lab there was a portal gun. Do you think that it’s a possible easter eggs. Any more easter eggs you can think of?
The game is filled with easter eggs which can be found just by looking around carefully. To prove you have found some of them (and thus gain an ingame achievement) you have to do something ingame. The list of doings you can find on GDT Wiki by searching for easter eggs =)