Hello! I research a good free game for speedrunning. I like platform or puzzle. I don't find anything good Do you know good games ?

N: Way of the Ninja 1.4

Cave Story

Red Beard.

It's a short 3-5 minute game on Miniclip.

Mega Man Rock Force, Another Metroid 2 Remake, and Psycho Waluigi

Pink Hour

Pink Heaven

Khimera: Destroy All Monster Girls

Bio Menace

GunGirl 2

These are all free platformers with varying amounts of speedruns done/length/difficulty

An Untitled Story sure looks like it would fit the bill. Available on http://www.mattmakesgames.com/

Little Fighter 2 Fancy Pants Adventure series