- Great Hardware - The PSP was a really great little handheld. It was very well-designed, felt great in your hand and had some great features, even outside of gaming. Having played only Gameboys up until this point, having a wi-fi capable system with an internet browser made this thing basically my first cell phone in terms of its functionality. It was also quite powerful, able to put out near-PS2 graphical levels in the palm of your hand. Compared to its competition, the Nintendo DS, the PSP won the hardware comparison, easily. I also loved that you could suspend games by putting the system into sleep mode, it was such a good feature.
- Strong Support - People don't remember it very well, but the PSP had strong support from first and third party developers, and even outsold the Nintendo DS for years, until that system's cheaper price and stronger support ended up winning over in the end (the presence of Pokemon games certainly helped as well). Still, this allowed the PSP to have a very strong stable of games that you can look back on fondly.
- PS1 Classics - One of the genius moves for the PSP was to allow you to play PS1 games on the go. Sony ended up releasing quite a few major titles for the system, including Metal Gear Solid, Resident Evil and Final Fantasy VII (in fact, I had never played FF7 until I downloaded it on my PSP).
- My Favourite PSP Games - The usual deal: this isn't a comprehensive list, but here are some of my favourite PSP games. These include Resistance: Retribution, Soulcalibur: Broken Destiny, Metal Gear Solid: Portable Ops, Metal Gear Solid: Peace Walker, Metal Gear Ac!d 1 and 2, God of War: Chains of Olympus, Patapon and Grand Theft Auto: Vice City Stories (mainly because, holy shit, a GTA game running on PSP hardware!?!).
- UMDs - UMDs were a cool, ambitious concept, attempting to be multi-media discs which would allow you to game and watch movies on the go. Sony tried to get film studios to release films on UMD discs and while there was some support, it wasn't widely adopted (my PSP came with a copy of National Treasure 2, if I remember correctly). So yeah, they were ambitious, but man do they take up a lot of space for a portable cartridge, they load slowly and the just look so strange. I'll give them points for trying something new, but I'm not entirely sure that it worked well.
- No Second Analog Stick - Why, why, WHYYYYYYY did Sony not include a second analog nub on the PSP!?!?! It's the system's most glaring issue and it single-handedly screwed over so many games on this system. The second analog stick on the DualShock had, by this point, become the solution to the camera issues which had plagued early 3D games, but by not including a second analog nub, you immediately put developers back to the PS1 era. Predictably, camera controls became the #1 issue on PSP games, with half-baked solutions abounding (see: Splinter Cell: Essentials, which would force you to stand still and hold another button in order to move and fix the camera in place).
- Power Button Placement Was Bad - The PSP was designed really well, but there was one glaring flaw (besides the lack of another analog nub, anyway...): the power slider was right were the palm of your hand would be, meaning that it was really easy to accidentally turn your system off. You kind of had to train yourself to not do this while playing, although there was more than one instance where I'd be playing Portable Ops online and accidentally turn the game off mid-match.
- PSP Go - The PSP Go was a cool concept: basically, a smaller, redesigned PSP which could only play games downloaded to the system. However, it was way too expensive Sony gave this thing basically no support, meaning that it was dead on arrival. I feel sorry for anyone who paid $250 for this thing at launch, because Sony sure as hell didn't earn your money.