I'm a bona fide hoarder when it comes to collecting, but my main focus since I started taking collecting seriously has been horror games. They're fascinating to me, whether they're the well-known *Resident Evil* or *Silent Hill* series, or the weirder off-shoots like *Clock Tower* and *Illbleed*.
Horror collecting is a great place to start, in my opinion, because it's very easy to build up a sizable treasure trove for very little investment. The classic PS1 *Resident Evil* and *Dino Crisis* titles, for instance, are all quite common in the $5-10 range. PS2 has a huge library of options available at dirt-cheap prices, like *The Thing*, *Extermination*, and *Shadow of Destiny*.
At this point, I've filled nearly all the gaps in my collection for US games (the elusive *Kuon* for PS2 is the last one I need to complete that particular library) and turned to importing titles like *Michigan*.
The best part about it is that so many games have some horror elements that you don't need to limit yourself strictly to survival horror titles. The *Persona* series, for instance, is inherently horrifying in its implications, and games like *Nightmare Creatures*, *Doom*, and *Alien Trilogy* have the player standing alone against hordes of terrifying monsters in suitably gothic or futuristic settings. Great article as always, @retro-room!