To give you the best information, did you mean the with the "swinging balls" (BLARP!) or the streaming tool for sound effects (Blerp)? Obscure/Trippy VR game - BLARP!
Based on your request, it seems you are looking for the indie VR physics game , developed for the HTC Vive.
Players control a wand, shepherding an expanding number of "blarps" (balls) while avoiding them touching the controller. BLARP! Free Download
It is designed for sensory overload and requires swinging the objects around, similar to using a yoyo or a rope.
A VR headset (such as HTC Vive) is required to play. To give you the best information, did you
While not typically listed as "free," it is a low-cost indie game (priced at roughly $0.99 to $2.99) on Steam .
is a trippy, psychedelic physics-based game often described as a 3D, "swirling" version of Snake . Players control a wand, shepherding an expanding number
Alternatively, if you meant (with an "e"), that is a popular, free-to-download soundboard extension for streamers.