If you are determined to hunt down this white whale, start with the Internet Archive's "BREW Software Collection." Look for the filename AngryBirds_v1.0.2_BREW_CRACKED.vxp . And when you finally see that red bird launch across a 176x220 simulated screen at 9 frames per second, you will understand why the search for VXP Angry Birds is a pilgrimage worth taking.

Because Rovio Entertainment primarily focused on major operating systems, many versions of Angry Birds found in the VXP format were "demakes" or unofficial ports created by third-party developers. These versions varied wildly in quality. Some were surprisingly polished recreations that captured the physics-based soul of the game, while others were simple 2D clones that lacked the sophisticated collision detection of the original.