CSPSP is a homebrew game for the Sony PSP, originally based on Valve's popular Counter-Strike. It's a 2d overhead (top-down) shooter that features team and free-for-all gameplay with a variety of weapons, all within a fully functional multiplayer component.

It was participated in the Neo Summer Coding Compo 2006 (PSP Games) and Neo Spring Coding Compo 2007 (PSP Games, 3rd place).

The homebrew was later updated by UnLuck3R and MasterMan with support for 3DS-PSP-PSVita Crossplay (see CSPSP+).

• Completely free of charge.
• A total of 28 different weapons to take down enemies with, including knives, pistols, submachine guns, rifles, machine guns, and grenades.
• A quickly growing multiplayer community (there's almost always someone to play online).
• A user account system with simple stats and friend lists.
• Hundreds of different maps.
• Fully-featured map editor (by coolguy5678) for the PC.
• Readily moddable (graphics, sound effects, gun configurations).

CSPSP should run on any of the recent Custom Firmwares.

For most cases, simply copy the CSPSP folder into /PSP/GAME/ on your PSP's Memory Stick (or /PSP/GAMEXXX/, where XXX is your Firmware version).