Safari Al has released Super Mini Yoshi V3 (SMM Mod). Besides the SMM mod, 10 new levels have been added along with some other additional changes.
Changes to SMM:

Graphics: Changed Mario to Yoshi, and parts of the ground to Yoshi’s Island ground. The coins are now eggs.
Sounds: Brand New Yoshi’s Island sounds.
Levels: 10 new […]

Joao Bastos has announced the initial release of Xadrez, a 3D chess game for PSP. This game features specular highlights, stencil reflections, and color blending.
Players can pick between the black or white side. Currently, the CPU does not have any memory. It just evaluates the pawn’s current position and reacts accordingly.
As this […]

6riku6 has released a new mod for Deniska’s Kill Everything That Moves (KETM) — Iron Man Edition. This isn’t the final version so expect an update soon.
For those who are still missing out on this great homebrew game, KETM is a fast paced tyrian style 2D shooter.
Iron Man Edition Features:

3 levels with different environments, […]

Madcupid and The DevInside Team (Dead Angel and RichardV) are back with a new version of Times of War. In case you missed out on the last release, to sum it all up, Times of War is a diagonal side-scrolling shooter with 14 levels and an interesting story.
Changes:

Game now is Multi-Language (English, Portuguese, Spanish […]

Halo Genocide fans will be glad to hear that Zion, otherwise known as Xx FightStar xX, has made a recent update to the game. This 2D side-scroller is based on Halo: Combat Evolved, and the developer states that this is “the closest and most realistic thing so far to being able to play […]

McZonk of Emergency Exit has released beta three of Quake 2 PSP Multiplayer. Beta 3 includes a speed increase, but sound is removed due to a sound engine bug, not the speed increase.

FPS increase
The game runs with stable 30 to 60 frames per second. Even during the battle the rate rarely drops under […]

Times of War (T.O.W) by Madcupid and The DevInside Team (Dead Angel and RichardV) is a shoot ‘em up game where you pilot an F-15 fighter plane to take down the enemies. There are 14 levels that you’re going to want to play through.
Changelog:

Added the Game Tutorial (under options)
The plane now performs a […]

The newest version of Xx FightStar xX’s homebrew game, Halo: Genocide, is out bumping it up to v1.2. Halo: Genocide is a 2D side-scroller based on Halo: Combat Evolved. The developer even says that this is “the closest and most realistic thing so far to being able to play Halo on your […]

kgsws brings us an updated version of two great FPS games, PSP Doom and PSP Heretic. The best part about this is, as kgsws says, multiplayer Ad Hoc for two player. There is also support for four players but hasn’t been tested yet.
Changes:
Both:

Sound Volume - it’s value is controlled by distance of […]

McZonk has released the second beta of Quake 2 Multiplayer for PSP. A lot of bugs have been fixed and some features have been added:

.pak File Support
Quake 2 has a simple archive format called pak. I have added support for pak files. This will decrease the copy to memory stick rapidly. It also increases […]