Post your essential (favourite) Playstation Portable homebrew games/applications in this topic and they'll be added to the list, for others to refer to when deciding which game to play.
If there is a game already on the list that you think should not be there let me know and it'll have a point removed (so if there are more negative than positive votes then the game will be removed entirely off the list).
You may also recommend some more games in a future post but: (1) you must not repeat any game you have already mentioned and (2) you must make a new post, do NOT edit your previous post as it may not be seen.
With homebrew, would be awesome if you could link to the homepage or other highly commended source for that homebrew, to make it super easy for people to find your recommendations (providing its all legal and legit)
Format completely plagiarised from dice, yay dice.
Essential Games List [10+ votes]
Recommended Games List [5+ votes]
[6]gpSP - GBA emulator
[8]NesterJ - NES emulator
[8]Snes9x TYL - SNES emulator
Noteworthy Games List [3+ Votes]
[3]CWCheat - Universal cheat device for PSP
[3]POPSloader - Loads PS1 games for better compatibility
[3]PSP Filer - PSP organizer application
[3]PSP Revolution - Rhythm based game
[3]PSPTube - Youtube/Dailymotion etc video viewer
Other Games List [