Modder builds Counter-Strike clone that runs at 60 fps on a PSP

Developer Yifeng Wang has released OpenStrike, a Counter-Strike clone that runs at 60 fps on Sony's PSP — hardware that is now 22 years old. The project is available on GitHub, though you'll need to supply your own Counter-Strike asset files to get it running.

OpenStrike is built on two custom engines Wang wrote himself: Pocket3D, a Rust-based 3D renderer, and PocketJS, a JavaScript engine. The whole thing runs with a roughly 12 MB RAM footprint, which is remarkable given the PSP's extremely limited hardware. All eight of Counter-Strike's original maps have been tested and work, and the current build supports elimination matches against bots. Buying rounds aren't in yet, so it's still a proof-of-concept rather than a full recreation. The PSP's native 480x272 resolution on its 4.3-inch screen is matched exactly — Wang hit 60 fps there by leaning on Binary Space Partitioning to cull non-visible geometry and by baking lightmaps into vertex colors rather than calculating lighting at runtime. These are old-school tricks, but they're exactly what ancient hardware needs. OpenStrike also runs on the PS Vita with native graphics, stepping up to that console's 960x544 display.

Counter-Strike, originally a Half-Life mod that launched as a standalone game in 2000, has been ported and adapted countless times — but getting it onto PSP-class hardware in 2026 via a clean-room engine is a different kind of achievement. The PSP launched in 2004 and was never designed to run anything close to a first-person shooter of this complexity. Projects like OpenStrike sit in a long tradition of demoscene and homebrew developers squeezing modern game concepts onto legacy hardware, but Wang's decision to build both a 3D engine and a scripting layer from scratch rather than port an existing engine makes this one stand out.

Wang shared the project on social media on July 10, 2026, and the reaction has been predictably enthusiastic — seeing Counter-Strike running on a PSP is the kind of thing that travels fast online. If you want to try it without digging out old hardware, the project also works via PSP emulators, and there's even a separate browser-based Counter-Strike 1.6 option for anyone who just wants a quick nostalgia hit.