2D histogram showing the sensitivity of GAME Filter as functions of D_L and M_L. The sensitivity, indicated by the colour bar, is calculated as the ratio N_20%/N_all · M_L is sampled logarithmically between 0.1 and 20 M_⊙, and D_L is sampled uniformly between 0.1 and 7.9 kpc. The cyan and green circles with error bars indicate two microlensing events, OB110462 (M_L = 7.1 ± 1.3 M_⊙, D_L = 1.5 ± 0.1 kpc; Mróz et al. 2022) and GDR3-001 (M_L = 1.0 ± 0.2 M_⊙, D_L = 0.9 ± 0.1 kpc; Jabłońska et al. 2022), respectively.