It looks like the string you provided—"aicomi%21 %5Bv1.0.1 hf 1.0%5D %5Billgames%5D"—is a URL-encoded or partially encoded fragment. When decoded, it reads:
AICOMI! [v1.0.1 HF 1.0] [ILLGAMES] refers to the initial high-performance patch release for the 3D life-simulation and dating game aicomi%21 %5Bv1.0.1 hf 1.0%5D %5Billgames%5D
%21 = !%5B = [%5D = ]